ORIGINAL: **budd**
Can do
You can the see the path to this key at the bottom of the screen shot. All i did was add the %* at the end.
You can use the search function and search for mshta.exe, for me it was the first thing to come up.
It might be good to check the other mshta.exe under the other keys.
I just went through the registry again
\mshta.exe\shell\open\command - all my keys under this path had the %* except for the one i changed and that got it to work. Mine is using the 32, you might have the 64bit associated with yours. in that case it would sysWOW64 in the path instead of system32.
Thanks Budd! Hopefully that will help nelms.
Rick