"an internal error has occured" - bad argument

Hello,

After importing the scans into light room and click on convert scans I get this error. “An internal error has occured - bad argument #1 to ‘pairs’ (table expected, got nil)”. The only thing that I can think of that started this error is when I started adding “film type” and “film format” in the metedata field on import(which I believe where added with negative lab pro). That the only change I have noticed that has been contributed to this error. After the initial pop up with failure message I can just launch negative lab pro again and it starts where it left off.

Thank you for looking into this.

I’ve been seeing this error periodically myself. Kind of disappointing to see no feedback in a year.

Can you see if the v3.1 beta fixes this?

I just installed v3.1 beta and have this error coming up with every batch conversion I make. Single negatives still work.

MacBook Pro Intel Chip
MacOS Sequoia 15.3.2
Lightroom Classic 14.2
VueScan 9.8.45