Question: I installed VS2010 B2 on my Win 7 machine. I create a simple DLL project and try to open the file Class1.cs that gets created by Default. I get a error message "The operation could not be completed. Invalid Pointer. So far i have seen this and similar error messages on previous versions of VS2010. Anyone else faced and solved this problem?

Answer: It seems i have to use true type fonts. The moment i changed the editor font from Inconsolata to Consolas the problem was fixed. Found [this](http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=505257) solution connect.microsoft

Answer: 
Sounds like a pretty fatal error in a fundamental operation, so it's unlikely to be a simple bug that was overlooked - it's more likely to be a problem with your install - If it were me, I would try reinstalling it (and do so with the default options - if the install was customised it's vaguely possible that a required component was not installed)
I had this problem when trying to put a style element on an .ascx page. Lots of times you can solve the error by saving the file, closing the page, then re-opening it.