14 Jun 2012
27 May 2011
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I had the same problem, because I followed the tutorial inside the documentation. There is a blogpost that SF4.1 SP1 implements the VirtualPathProvider, so the latest version of the Jobs module inside the SDK has this new approach implemented. If you follow the tutorial, you'll have to fix it with a workaround.
I used the Jobsmodule from the SDK, but wasn't able to get it running.
Well, after modifying the Jobsmodule for the 4th time without success, I'm going to have weekend first! :)
So, use the workaround in the blogspost, or try to implement the sample from the latest SDK.
Hopefully the tutorial will be updated soon, because that was a good one.