I've looked up the C++ R6025 - pure virtual function call error.
My best guess is that it's related to a "bad program" installed on your system. Most forums recommend a complete Windows reinstall, but this was also suggested (I can't vouch for it soooo use at your own risk [
EDIT: I'm talking about the utility not the system restore!]):
http://www.wiki-errors.com/wiki-errors.php?wiki=r6025
Personally I would recommend downloading Advanced SystemCare and running it's utility "Maintain Windows" and "Diagnose System" scans, then just let it fix all the errors.
****Just don't remove anything in it's Security Analyzer section of the scan (it will ask you to check what you want to remove and leaves everything blank by default) because it tends to highlight everything installed on your computer, lol.