New Post: .Net 3.5 to 4.5 Conversion.

Hi Everyone.

I have upgraded the .net framework of an existing website from 3.5 to 4.5

I am now getting an "PageRequestManagerParserErrorException" on all the previous working exports.

I have tried updating the NPOI.dll to the latest release using the 4.0 dll but a few of the classes are not usable (for instance, I can use see the Sheet Interface but not class).

My questions are as follows:
What could be causing the PageRequestManagerParserErrorException?
Why can't I instantiate the Sheet class but i can use ISheet in the new dll?

Thanks.