By default base XSLT folder is set as a tilda-based path, so particulary this error should not happen. Are you sure that your virtual folder of Umbraco is really configured as an application root folder? (In IIS manager console it can be done by right-clicking on the folder and select "Add application")

Thanks for the quick reply. I'm actually not sure of that, the options I have are not that clear in this particular hosting account. Unfortunatley it is a shared server not dedicated on this occastion. As far as I can see I am able to set the application pool mode (integrated or classic, I've set it to integrated), and to 'add an application' which it says will create a virtual directory for me.

If you think it should be working I'll try a simple asp.net application in the same location and investigate from there if it doesn't work

Thanks

That's quite easy to validate. You can put into the "umbraco" subfolder a very small file, say "test.cshtml" with just the only line:

@Request.AplicationPath

Then go with a browser: http://your.domain.name/your-virtual-folder/umbraco/test.cshtml.

If you see "/your-virtual-folder" that's all right - it means that the virtual folder is an application root as well. But if you see just "/" then this folder hasn't been configured as an application.

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