We installed the 32-bit version of 9.4.1 MR1 FP2 over 9.4.1 MR1 successfully, on a Windows 2003 server, without installing TM1 Web.
We later decided to install TM1 Web, so ran "Change" in Control Panel>Add or Remove Programs>IBM Cognos TM1
Here's the bug:
1. When launching "Change" for MR1 FP2, the following error appeared: "The TM1 setup cannot find the correct version of TM1 installed on your computer to upgrade. You must have TM1 9.4.1. installed to proceed" [peculiar, as 9.4.1 must have been installed to get this far].
2. When launching "Change" for 9.4.1 MR1, we get the message "A later version was detected on your computer. Cannot proceed" (or similar). [Correct, but unhelpful in the context of 1. above]
So that left us in logic jail, with the only parole option being to uninstall and re-install everything (which we could do, no problem).
This has been reported to IBM/Cognos and it is currently (01.Sep.2009) being investigated.
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