Script should be installed as package, using the package manager at the Spider Monkey Panel Configuration window. Old method is still supported anyway.
There may be a SMP's bug on installation. See wiki.
REQUIRES SMP 1.6.1 (mod version attached has some improvements by marc23)
See full changelog here.
[0.6.3] - 2023-09-26
Added
Changed
Removed
Fixed
- UI: crash while using internal drag n' drop if the number of elements was lower than the available rows and mouse moved to an empty row.