Please read all of this before posting, this is not a file extension association issue. File associations work fine. Background 1. My Win7 Enterprise laptop locked up on wake from sleep and had to be power cycled 2. Shortly after this an interesting problem started 3. If I go to most any File Open option in any application (for example Word, Winword, Adobe, etc) I get a twirly and the FileOpenDialog never opens and I am forced to close/kill the application. The odd part of this Clicking on a document in windows explorer will properly open the document. Also if I do a 'Save As' before doing a File Open allows me to use the File Open Dialog From my reading I am making an assumption that for some reason System.Windows.Forms.dll is not being loaded by FileOpen, but if some other operation (SaveAs for example) loads the dll then the Open operation can find the dialog. My question is what could have become corrupted to stop this dll from being loaded during an Open File operation. This may be an incorrect assumption but it fits the behavior. Scott H.