Windows Installer Error - Internal error 2755, 1601
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Internal error 2755, 1601 points towards the Installer Service not being registered, as David said. It can also have as cause that your Windows Installer is outdated.
Make sure that your Windows Installer program is at least version 3.1
It's called msiexec.exe and you can find it in your Windows\system32\ directory. Right click it and check its version number.
If it isn't 3.1, then you can download this version from Microsoft's pages, here. This version needs Windows 2000 with Service Pack 3 or later, Windows XP, Windows XP Service Pack 1, Windows XP Service Pack 2 and Windows Server 2003.
If you have an older Windows version (98/SE/ME), you need at minimum Windows Installer version 2.0, which you can get from here.
It's also possible that your installer is corrupt. To fix this, follow these steps (Windows 2000 or above only):
- Click START, and then click RUN.
- In the OPEN box, Type msiexec /unreg, and then click OK
- When this process is complete, click START, and then click RUN.
- In the OPEN box, type msiexec /regserver, and then click OK.
Lastly, if you have at least Windows 2000 or above, go to your services applet (Start->Run, type services.msc and click OK) and check that your Windows Installer service is not disabled. By default, it should be set to Manual, not running.
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