It is not recommended. Newer versions of USSEP may contain master files or scripting that requires the 1.6+ runtime, leading to potential instability or crashes to desktop (CTD).
Some newer mods require the absolute latest version of USSEP. If you try to run a 2024 mod alongside USSEP version 4.2.5a, your mod manager might warn you of a missing master file version. In this scenario, you will need to look for a "backport" patch or an older version of that specific mod to maintain compatibility with your 1.5.97 setup. Final Thoughts
It is not recommended. Newer versions of USSEP may contain master files or scripting that requires the 1.6+ runtime, leading to potential instability or crashes to desktop (CTD).
Some newer mods require the absolute latest version of USSEP. If you try to run a 2024 mod alongside USSEP version 4.2.5a, your mod manager might warn you of a missing master file version. In this scenario, you will need to look for a "backport" patch or an older version of that specific mod to maintain compatibility with your 1.5.97 setup. Final Thoughts