i know its kinda late, & your question is probly answered, but i stumbled upon this topic while searching for something else - .NET Framework SP1 (some hidden error, and XPlode moves to the next <item>) - Adobe reader 6.0.1 (the same) - K-Lite Mega codec pack (gives 4-5 errors on un-replaceable SYSTEM32\ files, and user must click "skip" on a dialog box, otherwise everything remains stuck) 1) i use ryanVM's switchless .net + sp1 which works 2) i use adobe 7 beta (extract the files & run the msi, it works 4 me) 3) i use klite codec pack, this is caused from files being in use i think, they are windows media player files i believe, extract them & copy them later or something (i dont use wmp) hope this helps