DepthSensor plugin load error

Question

I have a question about the ARC Robot Skill "DepthSensor." I was looking for the Kinect Body Control skill but couldn't find it. After some research, I saw that it has been replaced by the DepthSensor Robot Skill in ARC. I attempted to download the DepthSensor skill, but ARC produced the following error when loading the plugin: Timestamp: 2026-04-23 15:00:30 UTC ARC Version: 2026.04.16.01 OS Version: Microsoft Windows NT 10.0.26200.0 Base Directory: C:\Program Files (x86)\Synthiam Inc\ARC by Synthiam\ === Message Information === Unable to load one or more of the requested plugin types. Update ARC and this plugin from the Synthiam website, then restart your PC and launch ARC. If an update is available, ARC will prompt you at startup. If the issue persists, report it on the Community Forum and include this error text. Error: System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information. at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module) at System.Reflection.RuntimeModule.GetTypes() at System.Reflection.Assembly.GetTypes() at ARC.FormAddControl.VmiJVDQC7f7LxJjUoe4a(Object ) at ARC.FormAddControl.sL05JNDV45(String ) Loader exceptions: -------------------------------------------------- System.IO.FileLoadException Could not load file or assembly 'EZ-Builder, Version=2015.8.9.0, Culture=neutral, PublicKeyToken=c3a3457c97d352d9' or one of its dependencies. General Exception (Exception from HRESULT: 0x80131500) The drivers for my depth camera/Kinect were installed correctly (I did not get any errors during installation). I haven't modified ARC settings or other plugins. Do you have any ideas about what might be causing this, or what additional information (for example, whether the camera is connected directly to the PC or through an EZB, or logs) I should provide?

Synthiam Support · Accepted Answer

For Kinect sensors, use the Kinect robot skill.  You can also use the SEARCH feature in ARC's Add Robot Skill menu. You can type the words that you are looking for and it will search robot skills. Here is a screenshot  [opt:skill:20127]

jp15sil24 · Answer

i am using the last version ff ARC.  click on project ,add then search kinect. it displays just Kinect Xbox 360 Depth Mapping, can't see kinect body control

Synthiam Support · Answer

Your robot skill list is out of date. Refresh your robot skill list.

jp15sil24 · Answer

no luck. I forced the robot skill list,restarted ARC .Same behavior. I did again a force list, ARC closes automatically , reboot pc, start ARC, the same. I connected the kinect,i thought ,maybe the camera must be plugged, started ARC  ,no skill.

Athena · Answer

Great start! A reminder that an internet connection is required to download and synchronize files. To verify the progress of your download, view the DEBUG log by pressing the button on the top menubar of ARC. From there, you can see the progress and status of your robot skill synchronization. From your screenshot, it appears you are missing several robot skills. This document is a reference: https://synthiam.com/Support/ARC-Overview/robot-skills/Syncing-and-Updating-Robot-Skills

jp15sil24 · Answer

same problem, can't find the kinect body control skill. i did following: Ensure ARC is not running. Close ARC completely if it is open. Verify you have an active internet connection by opening a web page (for example, synthiam.com) in your web browser. Open File Explorer and navigate to C:\ProgramData\ARC. Delete the file named AvailablePluginsList.txt. Restart ARC.  ARC has created the new file AvailablePluginslist.txt at 11:26 am on the web page robot skill store, under camera, i see the kinect body control but why i don't see it in ARC ? i did again a force robot skill list.same problem I thought it might be hidden in another category. I looked through all the categories but found nothing.

Athena · Answer

I can see from your screenshot that ARC did refresh AvailablePluginsList.txt successfully, so the skill list cache is being rebuilt. Since Kinect Body Control appears on the website but not inside ARC, this usually points to one of these issues: 1. The skill is not compatible with your current ARC build 2. The skill is being filtered out because of the current search/category view 3. The skill requires an additional dependency or is being excluded by ARC’s current plugin sync 4. The skill listing on the website and ARC’s installed catalog are temporarily out of sync ## What I’d try next ### 1) Search by the exact skill name In Add Robot Skill, use the search box and try: - Body Control - Kinect Body Control - Kinect - Microsoft Sometimes the skill name differs slightly from what the website shows. ### 2) Check the skill store page directly Open the skill store entry and verify whether it has an install/download icon or whether it’s marked as unavailable for your version of ARC. You can also use the skill store search here: https://synthiam.com/Products/Controls ### 3) Open the ARC log after startup Since the skill list is refreshing but not showing the skill, the ARC log may reveal whether the plugin is being skipped or blocked during load. In ARC: - Open the Help menu - View the Debug/Log - Look for plugin load or sync errors around startup ### 4) Confirm whether the skill exists in your local plugin folder Check: C:\ProgramData\ARC\Plugins If the Kinect skill is downloaded there but not showing in ARC, that would suggest a load/compatibility issue rather than a download issue. ### 5) Try a fresh ARC restart after the cache refresh After deleting AvailablePluginsList.txt, close ARC, wait a few seconds, then reopen it without opening a project first and check Add Robot Skill again. ## Important note about Kinect support The older Kinect Body Control skill may no longer be the one intended for current ARC versions. The current Kinect options in ARC may be: - Kinect xBox 360 Depth Mapping - or a newer Kinect-related skill depending on hardware and drivers If the website shows Kinect Body Control but ARC doesn’t, it may be a catalog mismatch or the skill may not be enabled for your current ARC build. ## About the error you posted earlier The earlier ReflectionTypeLoadException mentioning: EZ-Builder, Version=2015.8.9.0 suggests an older plugin dependency is being referenced by that skill. That can happen if the skill was built for an older ARC/legacy dependency set and isn’t loading cleanly in the current version. ## What I need from you Could you please tell me: 1. Does the ARC log show any errors when you open Add Robot Skill? 2. Does C:\ProgramData\ARC\Plugins contain anything related to Kinect? 3. Are you using Kinect v1 / Kinect for Xbox 360, or Kinect v2? 4. What happens if you search for Body Control instead of Kinect? If you want, I can also help you interpret the log file if you paste the relevant lines here.

jp15sil24 · Answer

from your questions: Internet available: True Another ARC instance already running: False Current firmware src version is 2026.5.11.0 Available firmware src version is 2026.5.11.0. Downloading: False Loading firmware src file 22 firmware sources loaded Windows version: Microsoft Windows NT 10.0.26200.0 Synthiam account:  Screen Resolution: 1720x1440 (96x96 DPI, 100% scaling) ARC Pro Version: 2026.04.16.01 Adding 1 robot skill(s) to page 0: - ARC.UCForms.FormConnection (Connection) Adding 1 robot skill(s) to page 0: - ARC.FormBookmarks (Bookmarks) 2.  in the folder C:\ProgramData\ARC\Plugins , there are 34 folders and into this one: 0518bd78-2ac0-487e-ba58-c8b33bd2c81e from Avril 2026, i found 4 files: Kinect Body Control.dll Microsoft.Kinect.dll Microsoft.Kinect.xml title.png something interesting , in all other folders, i can always see the file plugin.xml but not in the directory mentioned above where we see Kinect Body Control. 3. xbox 360 kinect microsoft corporation model 1414. Normally it is the Kinect V1 4. by looking for body, it displays 3 skills from Omron

jp15sil24 · Answer

Restart ARC after deleting that plugin folder I deleted it ( i made a backup anyway) I still can not see the skill "kinect body control" in ARC at add project. 2) Re-add the skill from the store i dont know how to add from the store, i add skills inside ARC. From the store, i see the manual 3) Use the current Kinect skill instead For Kinect v1, the most likely supported skill in current ARC is: Kinect xBox 360 Depth Mapping this skill has no configuration just the text "test", no click possible. here's a screenshot:  you wrote: If you want, paste the ARC log lines that appear right after trying to add or load the skill. The exact load failure will tell us whether it is. I'd like to but as i can not see the skill , i can not add or load it. maybe i just need the file plugin.xml ?

Athena · Answer

Thanks - the screenshot helps. ## What I see Your Kinect xBox 360 Depth Mapping skill is loading, and the little "test" text you’re seeing is likely just a placeholder/test UI from that plugin. That means ARC is definitely loading that skill. But Kinect Body Control is still not appearing, even after deleting the plugin folder, which strongly suggests it’s not currently available to ARC in a usable form on your setup. ## Important point about plugin.xml No, plugin.xml alone will not fix this. plugin.xml is only the metadata file ARC uses to identify and load a skill properly. If the actual plugin package is: - missing plugin.xml, or - built against an old dependency like EZ-Builder,Version=2015.8.9.0, or - otherwise incompatible with ARC 2026, then ARC may refuse to list it or load it correctly. ## Why you can’t "add from the store" You are already doing the correct thing inside ARC: - Project - Add Robot Skill - search for the skill That is the right place to add it. The web store is only for browsing info. ## What this means Based on everything you’ve shown: - Kinect Body Control appears to be an old legacy skill - ARC 2026 is likely not loading it due to compatibility/dependency issues - the currently available Kinect option in ARC is the Kinect xBox 360 Depth Mapping skill ## About the Kinect xBox 360 Depth Mapping skill From your screenshot, that skill is functioning, and it looks like it has: - a depth image display - detection area settings - test output So the skill is alive, even if it isn’t the old body-tracking feature you expected. ## Best next step If your goal is body tracking / skeleton tracking, tell me exactly what you want to do with the Kinect: - track a person’s body? - detect presence/distance? - use hand/arm motion? - control movement with the Kinect? Then I can tell you whether ARC has a current skill for it, or whether we need to build a workaround using a custom robot skill. ## If you want to verify the plugin issue Try this one thing: 1. Open C:\ProgramData\ARC\Plugins 2. Look for the folder for Kinect Body Control 3. If the folder comes back after restart, open it and check whether plugin.xml is present 4. If it still doesn’t exist, then the skill package itself is probably incomplete or incompatible If you want, I can help you inspect the plugin folder structure and tell you exactly what files should be there.

DJ Sures · Answer

The folder containing those files is most likely an incomplete install. Or higher probably, an incomplete uninstall. You can look at the date time on the folder to see when that occurred.  So arc sees the folder, but the definition file is missing.  an easy fix is to remove that folder: C:\ProgramData\ARC\Plugins\0518bd78-2ac0-487e-ba58-c8b33bd2c81e In fact, you could remove all folders within C:\ProgramData\ARC\Plugins if you want to ensure a 100% recovery of all robot skills. You will not lose any saved configuration by removing that folder. It would remove the source libraries for the plugins - in which case you would be prompted to install plugins moving forward if needed for a project.

jp15sil24 · Answer

Thank you for the detailed feedback. I really appreciate your help in troubleshooting this. I will follow your advice and clean the C:\ProgramData\ARC\Plugins folder to ensure there are no corrupted files or incomplete installations on my end. It’s a great suggestion to start fresh. Quick question to help me plan my project: Once I've cleaned everything, if the 'Kinect Body Control' skill still doesn't appear in the search, does it mean it has been moved to a legacy status for the 2026 version? I am a big fan of the JD robot demos using Kinect, and I was hoping to try the same setup. If that specific skill is no longer available, I’m happy to look into other ways like Auto Position or Servo Recorder to achieve my goals, but I wanted to check with the experts first so I don't miss something obvious! Thanks again for your time and for the great support

DJ Sures · Answer

The connect body control is not legacy status. The other skill which started the conversation is expired and has been removed until the author updates it.  always feels good starting fresh! You’ll be prompted to install robot skills as needed once the folder is removed.

jp15sil24 · Answer

I have followed your instructions and successfully cleaned the corrupted folders as requested. Unfortunately, the diagnostic is final: despite the cleanup, the skill still does not appear in the ARC Robot Skills search results. Since the skill remains indexed as missing or unavailable for my version/region, I have decided to pivot my workflow toward the Auto Position skill to move forward with my robot arm integration. Thank you for the assistance provided so far,  I will be proceeding with this alternative solution for now.

DJ Sures · Answer

This is concerning that it's not showing up for you. I am raising priority to have this issue looked into immediately to find out what's happening. It should be caught and logged, so something is slipping through the cracks. Stay tuned while it's being looked into.

Synthiam Support · Answer

We have made some changes on our end - and would like you to start ARC with an internet connection, and verify if the Kinect robot skill that you are looking is available for installation.

jp15sil24 · Answer

I have verified the Robot Store after restarting ARC with an internet connection as requested.

I am happy to confirm that the Kinect Body Control skill is now visible and I have been able to install it successfully into my project.

Thank you for your assistance and for resolving this issue.

jp15sil24

Depthsensor Plugin Load Error

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