In addition to dw-2000 on my system, I also have another application that uses FlexLM. Sometimes problems are encountered when I try to run these applications. What can I do to eliminate these problems?

When it is necessary for other applications to use FlexLM, your environment variable can be written similar to the example below:
LM_LICENSE_FILE c:\dw2000_v7.50 license\license.dat; c:\other_app\license\license.dat