I have a pretty simple installer that just installs a product folder and a couple of DLLs. A user who has installed a previous version of the product is trying to use this insaller to update to a new version. He's running Windows Vista on an Administrator account but when he runs the new installer it never gets past:
Searching for qualifiying products
Property: AI_SETUPEXEPATH, Signature: AI_EXE_PATH_CU
He can click Cancel, but not Next. He's left it for 10 minutes and the next button does not become available. The installer itself doesn't have any search parameters (I don't search for previous versions manually, though I guess as he is installing a new version of an existing product it might be doing it automatically). Is there anything that might need to be done at his end to solve the problem?