Are you certain you are running the most recent version? There are no reports of something like that. Also ensure you have .Net 4 runtime installed and updated.

Thanks DJ, for your quick reply. Yes I'm using the latest version and since the error begun I manually installed .Net 4.5 runtime, checked windows update.

Interesting, there's always one in a thousand of windows installations that is troublesome. My suggestion is usually to ensure the updates, uninstall the software, reboot, reinstall software and cross your fingers

What operating system are you using?

I have done that DJ but the problem persist. I'm using windows 7 home premium. I'm going to use system restore to try saving the project at an earlier date, and also try to save the project on a different computer. I'll let you know what happened.

I can't imagine what the issue is. After you have uninstalled, can you look in the c:\Program Files (x86) folder and see if there is an EZ-Robot folder? If there is, can you remove those folders manually? Then reboot and re-install.

Thank you DJ for these instructions, I followed them but the problem persisted. I tried to save an earlier version of the project file from EZ cloud and it worked. There was no error! Conclusion: The project file got corrupted. Thanks DJ, for your help.

Share the project on here. You can use the file attach feature and upload the file to your message so I can view it

Sounds good! I'll do that later since I'm at work now.

Here you go DJ!ProxyTheRobot.EZB

For some strange reason your EZB file was damaged. i repaired it: ProxyTheRobotFixed.ezb

Thanks DJ! You're definitely my man.