Urgent installation problem on Win7 x64 with the new 5.0.0.7

[Aldus@Monitor]

Hello,

I have 2 test computers with the following installation issue when using 5.0.0.7:
Windows 64-bit x86 Install
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Checking for existing PDF printer
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Removing existing PDF printer
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Removing PDF printer driver
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Installing using .inf file
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Copying cdintf.dll file
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Copying xmllite.dll file
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Copying cdintf64.dll file
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Copying xmllite64.dll file
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Installing Amyuni PDF printer driver
Error Code: -2146500025
A problem was encountered while attempting to add the driver to the store.
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Installing Amyuni PDF printer
Error Code: 1797
The printer driver is unknown.
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Printer setup failed
Error Code: 1797
The printer driver is unknown.
------------------------------------------------------------------------------------

Both test computers install 5.0.0.3 without problem. The problem is repeatable. I.e. I can install 5.0.0.7 get the error, then install 5.0.0.3 and its all fine again. Trying 5.0.0.7 again gives error. Uninstalling all amyuni drivers, restart of computer, install of 5.0.0.7 still fails. This is on Windows 7 x64 Enterprise. Our test on Window 8/8.1 x64 seams to work fine. (On our development machines it works fine.)

Regards
MrK

[Aldus@Monitor]

Can it be a driver file that is missing Authenticode sign?

/MrK

[Aldus@Monitor]

We think we have solved the problem:
On certain computers the installation fails if the amyuni.inf file is present from a previous installation (possibly also installed into the Windows System Driver DB).
Forcefully overwriting the amyuni.inf seems to fix the issue (and making sure the file exist in the same directory as the installation starts in). This probably causes Amyuni to verify the Authenticode signature to an older signature database (atpdf400.cat instead of atpdf500.cat) and thereby failing the installation.

/MrK