When you need to remove the flash.ocx ,because your log file shows:
01:21:02.14 10/26/1985: Please try deleting flash.ocx in the installation folder and then reininstall PinballX.
01:21:02.14 10/26/1985: You may need to change security properties on the file.
01:21:02.14 10/26/1985: If PinballX does not initialize you should address this issue.
It could be a difficult thing to remove the file.
I hope this tutorial will make it easier.
Navigate to your PinballX folder via the windows explorer (My example is in c:\pinball\PinballX, but could be installed in another drive/folder) and locate flash.ocx.
Right click on it and select Properties
Click on the security Tab and select Edit
In the Permisissions for FlashOCX, make sure Everyone is selected And click on the Allow Full Control
Click Apply and click OK after that
Now click on Advanced
There will be 2 entries for Everyone.
Select the Deny Everyone and click remove
Click again on Apply and click OK
Click OK to close the window
Now you are able to delete the Flash.ocx file