PDFCreator 1.6.2 can't create pdf with error 5 in Modul clsregistry Procedure getregistryvalue

Already for years we and too a friend are using your pdfcreator and are fully satisfied about it. Since some weeks its impossible for my friend to create pdf files because PDFCreator
stops working immediately after the start of it after installing the program.
In MS-Word 2007 was selected PDFCreator as printer and then selected Print.

What do you think that could be wrong. We have 3 computers with your pdfcreator 1.6.2 which functions very well, but the one from a friend with Windows 7 64-bit has this problem.
We have tried already more than one time to install your program ("Standard installation" without PDF architect) on the same computer. Even after deleting every Windows Registry (PDFCreator) entry that left after uninstalling PDFCreator by uninstalling it from the Windows control panel -> programs and features.

pdfcreator 1.6.2
Error description:
Error-Nr: 5 (Invalid procedure call or argument)
Modul: clsregistry
Procedure: getregistryvalue
Line: 50540
Adobe Acrobat has been uninstalled before

Do you have an indication what we could try to do to solve our problem?

Should be fixed in version 1.7.0. If you want you can get a test file (PDFCreator.exe).

Already for years we and too a friend are using your pdfcreator and are fully satisfied about it. Since some weeks its impossible for my friend to create pdf files because PDFCreator
stops working immediately after the start of it after installing the program.
In MS-Word 2007 was selected PDFCreator as printer and then selected Print.

What do you think that could be wrong. We have 3 computers with your pdfcreator 1.6.2 which functions very well, but the one from a friend with Windows 7 64-bit has this problem.
We have tried already more than one time to install your program ("Standard installation" without PDF architect) on the same computer. Even after deleting every Windows Registry (PDFCreator) entry that left after uninstalling PDFCreator by uninstalling it from the Windows control panel -> programs and features.

pdfcreator 1.6.2
Error description:
Error-Nr: 5 (Invalid procedure call or argument)
Modul: clsregistry
Procedure: getregistryvalue
Line: 50540
Adobe Acrobat has been uninstalled before

Do you have an indication what we could try to do to solve our problem?

Frank, you did a great job. The new version 1.7.0 functions perfect after installing it at my friends computer. Many thanks. Peter Annegarn.