virtualbox.org

I have a very odd problem that a XP .vdi, keeps giving a .Net 2 framework Fatal Exception Error running programs like SQL Central, or other Net apps. However, this doesn't happen with exactly the same .vdi on my Windows 7 computer. The Oracle Vbox versions and settings are exactly the same.

Other than .Net error, everything appears to work fine. The only difference is the two computers that I am running VirtualBox on.

Any ideas much appreciated?