'there was a problem sending the command to the program' error message in windows 7 using word 2007

Perfect, thanks for the help.

This solution worked for my situation.

What happened:

My computer came with MS Word Viewer installed

Later, I installed MS Office

After that point, I received the above error message EVERY TIME I opened a Word document from outside the application (eg, from Explorer, from an internet download, etc).

What fixed it:

Renaming/removing the key: HKEY_CLASSES_ROOT\Word.Document.12\shell\Open\ddeexec

(I didn't take any of the other steps, because they didn't apply for my configuration)

Rationale:

The ddeexec key contained information for sending DDE messages to the nonexistent "WordView" application, not to the full Word application that was *actually* opening the "Word.Document.12" files.  The MS Office installer probably should have modified this registry key, but did not.

in windows explorer, i double click on a word 2007 doc  and i get an error message 'there was a problem sending the command to the program'. if i click on it a second time - it will open. irritating ..... any suggestions?

Copy Shortcut files from C:\ProgramData\Microsoft\Windows\Start Menu\Programs

and paste to C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Microsoft Office

Yes, the problem doesn't arise when Word is already open.

Before open word and excel shows  'problem sending the command to the program' 

error exactly one time and after Double Click again it opens the file. what should I do