I added an option to register a dll silently using the right click context menu by adding the following registry key:
[HKEY_CLASSES_ROOT\dllfile\shell\Register\command] @="c:\\windows\\system32\\regsvr32.exe \"%1\" -s"
which I was using in XP. In XP when I selected many (200) dlls and right clicked them I would get the 'Register' option and could register them all in one go, silently. I have tried the same on my Win7 x64 machine and it works when I choose one or a few dll files, but as soon as I choose over 15 files, the register option does not appear in the context menu any more.
Why is this and how can I fix it?