Typemock disabled when debugging with Resharper 7 runner

We have Typemock 7.3.0.0 Essential with Resharper 7.1.1 and xUnit.

We are able to "Run" tests using the Resharper test runner, no problem.

We cannot "Debug" tests that use Typemock though - it results in an exception:

---
TypeMock.TypeMockException
*** Typemock Isolator is currently disabled. Enable using the following:

* Within Visual Studio:
- Use Typemock Smart Runner
- For other runners, Choose Typemock Menu and click Resume Mocking

* To run Typemock Isolator as part of an automated process you can:
- run tests via TMockRunner.exe command line tool
- use 'TypeMockStart' tasks for MSBuild or NAnt

For more information consult the documentation (see 'Running Unit Tests in an Automated Build')
---

Further investigation reveals that the Resharper test running process JetBrains.ReSharper.TaskRunner.CLR4.MSIL.exe has the following environment variable set, while debugging;

COR_PROFILER={b146457e-9aed-4624-b1e5-968d274416ec}

However, using Reflector I can see the following check in Typemock;

private static void a()
{
if ((Environment.GetEnvironmentVariable("COR_PROFILER") != "{B146457E-9AED-4624-B1E5-968D274416EC}") || (Environment.GetEnvironmentVariable("Cor_Enable_Profiling") != "0x1"))
{
if (Environment.GetEnvironmentVariable("COR_PROFILER") != "{D1087F67-BEE8-4f53-B27A-4E01F64F3DA8}")
{
throw new TypeMockException("Typemock Isolator is currently disabled. Enable using the following: * Within Visual Studio: - Use Typemock Smart Runner - For other runners, Choose Typemock Menu and click Resume Mocking * To run Typemock Isolator as part of an automated process you can: - run tests via TMockRunner.exe command line tool - use 'TypeMockStart' tasks for MSBuild or NAnt For more information consult the documentation (see 'Running Unit Tests in an Automated Build')");
}
throw new TypeMockException("Typemock Isolator is currently disabled. Enable by turning off JustMock then Choose Typemock Menu and click Resume Mocking");
}
}

It would seem that Typemock does a default comparison (Ordinal, case sensitive) of the GUIDs as strings. Since the one defined in the environment variable is lower case, it fails.

I also notice that the COR_PROFILER for devenv.exe is uppercase {B146457E-9AED-4624-B1E5-968D274416EC}, as expected.

I also notice that the COR_PROFILER for JetBrains.ReSharper.TaskRunner.CLR4.MSIL.exe is uppercase {B146457E-9AED-4624-B1E5-968D274416EC}, while running.

I can't determine why this is lowercase while debugging, but uppercase while running.

Any tips?