Error “REGDB_E_CLASSNOTREG” upon Startup

[Andreas Kollmann]

On a particular (Win11) PC I cannot get Flexpro to run because everytime on startup i get this error “REGDB_E_CLASSNOTREG” twice.

First error message is “Error creating Addin Host”, second message is “Cant initialize VBA”.

I have tried, reinstalling, installing an older version, repairing, but nothing seems to work.

[Adrian Giurca]

Hi Andreas,

 

installation problems can be sent even without support from the respective web site form: https://www.weisang.com/en/support/flexpro-support/

 

To answer your question:

The reported error messages are due to incorrect or failed installation of the VBA components.

 

Please look into the folder “%LOCALAPPDATA%Downloaded InstallationsFlexPro 2021 Suite”. If you find 6 folders with names like “VBA-*-x64” proceed as following:

 

Open a command line window (cmd) with administrative privileges and navigate to this folder with the command

 

cd /D %LOCALAPPDATA%Downloaded InstallationsFlexPro 2021 Suite

 

Each of the VBA-* folders contain a .msi installation file that can also be used for uninstalling the associated component with the following commands

 

msiexec /q /x VBA-Core-x64Vba71.msi

msiexec /q /x VBA-CHS-x64Vba71_2052.msi

msiexec /q /x VBA-DEU-x64Vba71_1031.msi

msiexec /q /x VBA-ENU-x64Vba71_1033.MSI

msiexec /q /x VBA-FRA-x64Vba71_1036.msi

msiexec /q /x VBA-JPN-x64Vba71_1041.msi

 

Now FlexPro can be uninstalled and reinstalled again to cope with this issue.

 

If on the other hands, the folders named “VBA-*-x64” are missing, please follow this procedure:

 

Open the registry editor (regedit) with administrative privileges and maneuver to the key

 

HKEY_LOCAL_MACHINESOFTWAREMicrosoftVBAVBA7.1

 

In the subkey InstalledBy you find entries (beside (Standard)) for each program that installed VBA 7.1 (x64). The FlexPro entry has the key

 

{A9094AA5-B5F1-49F2-A5C7-8F0BFEE7DB35}   (for FlexPro 2019)

{ED93C4E1-2948-4671-BAFC-FDD3BB014C23}  (for FlexPro 2021)

 

If this is the only key, you can safely remove the key

 

HKEY_LOCAL_MACHINESOFTWAREMicrosoftVBAVBA7.1

 

and uninstall and reinstall FlexPro.

Best regards,
Adrian Giurca

[Andreas Kollmann]

Thank you very much, I removed the key and reinstalled. Now it works!

[Author]

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