Greetings! I am having an issue where the entire SARS crafting category disappears whenever I exit the game and reload. I do not see any error messages upon loading. The category still shows in the Factoriopedia as well.

You checked you're up to date, right? I thought I squashed that bug.

Mod is indeed current, the bug seems to trigger whenever I see the "Migrating Libraries" message when the game loads. May be some weird interactions with some other mods.

Edit: I changed a setting on Pneumatic Transport Repressurized, which triggered a Rate Calculator reload, and now the SARS category has disappeared from the crafting menus. Also confirmed that I am on SARS 1.4.5.

Yeah this is a similar issue to what I just posted about as well, the category and all the recipes seems to break whenever I add any other mods in.

Mod is indeed current, the bug seems to trigger whenever I see the "Migrating Libraries" message when the game loads. May be some weird interactions with some other mods.

The "migrating libraries" message does not come from my mod--it has no such announcement anywhere in its code. But I'll look into methods for better cross compatibility and see if I can implement something in the next few weeks. I'm currently neck deep in a tricky bug for a different mod so I can't work on this one immediately, but I'll get to it asap.