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When opening the software you get an error message that says "System.NullReferenceException: "Object reference not set to an instance of an object." and the software closes.
Another possible error message may read: "Application has generated an exception that could not be handled."
The library.config file become corrupt
If you are using Pondpack 10.00.022.00 or greater
Make sure the software is closed and browse to "C:\Documents and Settings\(user name)\Application Data\Bentley\EngineeringLibraries\" (for Windows XP) or "C:\Users\(user name)\AppData\Roaming\Bentley\EngineeringLibraries" (for Windows 7).
Locate the "libraries.config" and "libraries.config.bak" file and delete them
Reopen the software
If you are using PondPack 10 build 16 or below
1) Download the following .zip file to your hard drive: ftp://ftp.bentley.com/pub/knowledgebase/attachments/Libraries_v10.zip
2) Extract the libraries.config file to this location on your machine with PondPack closed: C:\Documents and Settings\All Users\Application Data\Haestad Methods\EngineeringLibraries\ (or if you are using Windows 2000: C:\Documents and Settings\All Users.WinNT\Application Data\Haestad Methods\EngineeringLibraries\) When prompted to overwrite the existing files, select yes.
If you are using PondPack 9
1) Download the following .zip file to your hard drive: ftp://ftp.bentley.com/pub/knowledgebase/attachments/Libraries_V9.zip