f# tools 3.1.1 not working with visual studio web express 2013. What am I doing wrong?

Question

None of the f# templates I've installed work.

File => New Project => Installed => Templates :::: Doesn't list f# as a category.

Websharper.vsix says it installed fine. Extension is already installed.

Repairing the install of F# tools 3.1.1 doesn't fix it.

Starting a new f# project based on an online template results in an error: "The project creation was not successull. Exception from HRESULT:0x80041FE1 "

Is there a way of checking in visual studio web express 2013 that the f# tools have successfully been installed?

The f# tool chain is working in VS express for windows desktop.

Answer 1

_{Reposting from comment, as wiki since it was only a guess:}

Try 3.1.2, which only came out last Wednesday – it may contain bug fixes that resolve your issue.