[Paint.net no longer works!]

Same problem with XP SP2

I tried to update to 3.5.1, it quitted around 30% of net.framework

the 3.36 version did not work any more

pdnrepair created an empty logfile

I got this window

Reinstallinitg did not work

deleting net.framework 1.1,2.2,3.0 did not help. they would not re-install properly

I tried Windows Installer Cleaner to no avail.

Restoring to a date before the problem did not change anything, 3.36 did not work ,

I got the same window as mentionned above

I have A-squared Anti Malware, It does not detecte any virus.

Help, please, I am stymied. I loved Paint.net,I can't do without it