If a problem only occurs on a customer system, the first thing to do is to create a log file. The tool Debwin can be used for this purpose. It can be found in the "Tools” directory of the List & Label installation.
Debwin has to be started before the application. If the application is started afterwards, all calls of the component with their return values as well as additional information about module versions, operation system, etc. will be logged.
Every exception thrown under .NET represents a negative value of a function in the log. There is usually more helpful information in the log.
If the application is supposed to create debug logs without the help of Debwin, this can be done in the configuration file of the application. Logging can be forced as follows:
<configuration>
<appSettings>
<add key="ListLabel DebugLogFilePath" value="C:\Users\Public\debug.log" />
<add key="ListLabel EnableDebug" value="1" />
</appSettings>
</configuration>