Clear PowerShell Sharepoint Cache?
Turns out that PowerShell is actually caching some stuff in particular the OWSSVR.DLL.
There are two (and ½) ways to overcome the problem:
- Use a nifty PowerShell snippet to kill a Sharepoint thread and reload a DLL
- Use a different PowerShell session started from within the first session
- Use old-school stsadm to create the site as stsadm lives within another thread and hence "sees" the new site templates already
I went with method 2 ½ (denoted 3) as it is just the easiest using a one-liner stsadm instead of calling up yet another PS session.
I can't check from here, but it's possibly got something to do with the web being cached in the current "assignment collection." Take a look at the Start- and Stop-SPAssignment commands. I'm not sure what the default assignment model is, but I'd try running "Stop-SPAssignment; Start-SPAssignment" to see if that will dispose of the current cached SPWeb being used to retrieve templates.
-Oisin