There may be several causes of the UCEERR_RENDERTHREADFAILURE error:
- video hardware or driver problems
- render thread failures due to the use of layered windows, particularly in Windows XP / 2003
Update your video drivers, and/or try different video hardware in the problem machine(s). If the problem persists, try the second option.
Upgrade to the latest version and service pack level of the .Net Framework. If the problem persists, try the third option.
In the Settings→Support form uncheck the checkbox Enable GPU rendering mode and click the ОК button.