QGIS 1.6.0 won't run: QHashData in QtCore4.dll on Windows machine

[mly]

I uninstalled the old versions of QGIS (v1.0?) & GRASS from a Windows Vista machine. I downloaded the QGIS Windows Standalone Installer from www.qgis.org. I installed QGIS-OSGeo4W-1.6.0-14615-Setup-2.exe as administrator. When I tried to run for the first time I get the error message shown below (?nextNode@QHashData@@SAPAUNode@1@PAU21@@Z could not be located in the dynamic link library QtCore4.dll). I uninstalled everything and tried again with the same result. I searched the machine and found 6 different copies of QtCore4.dll (including printer and Adobe programs). Ticket #2965 doesn't seem very helpful. How do I get QGIS to run?

[jef]

Replying to mly:

I searched the machine and found 6 different copies of QtCore4.dll (including printer and Adobe programs). Ticket #2965 doesn't seem very helpful. How do I get QGIS to run?

Where are those copies? If you have any in %WINDIR%\system32 rename them and try again.

[mly]

Replying to jef:

Replying to mly:

I searched the machine and found 6 different copies of QtCore4.dll (including printer and Adobe programs). Ticket #2965 doesn't seem very helpful. How do I get QGIS to run?

Where are those copies? If you have any in %WINDIR%\system32 rename them and try again.

Yes, one copy was in c:\windows\system32. I renamed it, rebooted, and again tried running QGIS. This time a different error message appeared: "The procedure entry point _Z10qAllocMoreii could not be located in the dynamic link library QtCore4.dll"

[jef]

also check for other Qt related DLLs in system32

[pcav]

I think this is a local problem only. Please clean up your system and report back, reopening if necessary.