[1.121/Royalty] Sim Picker (travel by phone etc.) fails; LE generated

Sim Picker functions (e.g., travelling) failing with the Royalty EP is mod-related.

With the Royalty EP (and possibly without but so far, not in testing), travelling and other options that pull up a Sim Picker fail with some custom career mods. Note this scenario:

• One Sim is in a custom career 
• A different Sim attempts an action that produces a "Sim Picker" panel — travelling by phone, posting to someone on Social Bunny, etc. 
• The action fails and an LE is produced.
• If you don't have Better Exceptions installed, the LE includes "ui_dialog_picker.py" and "cpp_message".
• If you do have BE installed, you get a "cpp_message" error. 

Not all custom careers are affected, but there are likely a lot of them, so please use the lists in Broken and Updated Mods and CC for now. Follow Broken and Updated Mods and CC to get notifications of new reports of broken/updated mods in this category. Testing is ongoing. Very few mods have been updated for this issue so far. As of February 16, you can update/download Lot 51 Core Library to correct this issue, including for mods that don't say they require Core Library. Note that some mods may, of course, be broken in other ways!

Most gigs/odd jobs mods are not affected.

Some custom traits might also be affected, but my understanding right now is that it should be very, very few. I've not yet started testing those.