System.BadImageException for TypeMock.dll

Hi,
for some reason I can not start the TMockRunner. I get the BadImageException. Something strange is going on with the TypeMock.dll. I checked the version and it is the .Net2.0 version like expected. I was not able to remove the dll from the GAC because windows said that another process is using that file. I checked windowsssemblygac and could not find a directory for this assembly. It seems like it is not even there. So removed it in the registry (HKLMclassesGlobal). Now when I move it back into the GAC, I still do not see a directory for the TypeMock.dll. When I'm using the gacutil /il I get following error

C:Program FilesTypeMockTypeMock.NET>"C:Program FilesComponentOne Studio.NET
2.0ingacutil" /il TypeMock.dll
Microsoft (R) .NET Global Assembly Cache Utility. Version 2.0.50727.26
Copyright (c) Microsoft Corporation. All rights reserved.

Failed to add assembly C:Program FilesTypeMockTypeMock.NETMZ? to the cache:
The filename, directory name, or volume label syntax is incorrect.

Invalid assembly filename in input file.

Number of assemblies processed = 1
Number of assemblies installed = 0
Number of failures = 1

Any ideas?