When I install LLBLGen Pro 2.0 on Windows Vista, I got the following error and the installer rolled back itself.

Error:
The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2869.

So I dig around the forum and found this solution from Otis.

• Create a new .bat file in the same folder as the one the LLBLGenPro20.msi file is in.
• Add the following text ‘msiexec /i LLBLGenPro20.msi’ and save the file.
• Right click the .bat file and select ‘Run as Administrator’.

I tried doing as mentioned in the steps but I got the following message and couldn’t able to install it.

So I changed the Otis’s command to ‘msiexec /a LLBLGenPro20.msi‘ and run it directly from command line instead of right-click – run as administrator on the .bat file and it works!

If it still doesn’t work for you after following the above steps, I guess you better do these, disable UAC and enable XP compatibility mode as mentioned here.

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