Not sure... but usually those errors apply to the .net compact framework...
do a google search for .net framework 3.5 (the latest and install)... if its the exe, you have to install through you pc... but if u can find the .cab you can install that directly on your phone... I beleve we have the cab here also... so search here first and you should be good
ends in .arm sounds like the cab... still a no go?... is this a recent issue, meaning did the manilla ever work properly, of has it never worked... if this is a recen issue and it wasnt like that before, uninstalling the last few apps u installed and soft reset to see if one of them caused a conflict... If not, Id suggest backing everything up and hard reset, and this time install apps slowly, one at a time a gauge ur devices reaction to them, to figure out what was the problem...