Ah ... okay, 1.34 doesn't like quotes, it must be

WebFolder = C:\inetpub\wwwroot

The original line in Zorro.ini of 1.34 looks like:

WebFolder = "" // for the trade status page, f.i. "C:\inetpub\wwwroot" for IIS

So the quotes were not an idea of mine and in 1.32 no problem, too. laugh