The functionality to save and load sessions is not working in version 1.42.
If I open two log files and save the session via File > Save session..., the following file is created (renamed to *.json due to filetype restrictions here in github).
session.lxj.json
If I open this file with LogExpert or try to load it via File > Load session..., I get the following error dialog.

Here are the two simple test log files
test1.log
test2.log
The functionality to save and load sessions is not working in version 1.42.
If I open two log files and save the session via File > Save session..., the following file is created (renamed to *.json due to filetype restrictions here in github).
session.lxj.json
If I open this file with LogExpert or try to load it via File > Load session..., I get the following error dialog.

Here are the two simple test log files
test1.log
test2.log