Hi James,
I can't really answer that without a bit more information. Any chance you can send through your workspace to This email address is being protected from spambots. You need JavaScript enabled to view it.
? (the workspace is the .rmdb file). Also let me know what map in the workspace you are exporting, which version RM you are running, your OS (and whether it is 32/64 bit) and what version of the IMC you are running.
Also please ensure that you can run the IMC "by hand" by double clicking on the InsightMapCreator.exe application file in the directory in which you unzipped the IMC download.
thanks,
Matt