Flex,
Thank you for your reply. Re installing V9.8.64 on my Win7, 32 bit laptop, got rid of the Run-time error.
Whenever i worked on a project on any prev versions, as a force of habit, I would periodically save my file (overwrite on the same file). Here in V9.8.64, every time that i try to do so, I'm prompted that another program is using the file, and that the file should be renamed. I would then save it as filename_x.vlp. It would then save it. Now i did this and saved my latest file and took a coffee break. On resumption, the latest file opened with the work that was done 2 days back, even though the time stamp of saving was just half hour back. Now i have un installed V9.8.64, installed V9.8.31, but alas i cannot open the file i was working on. Now Ive resigned to rebuilding the project from scratch