Monitoring FX crash Reaper

[tompad]

Got a Runtime Error (see pic) when activating or deactivating
different plugins in Monitoring FX window - tried with Voxengo SPAN,
Izotope Insight 2 and ReaEQ (same error for everyone).

Clicking OK on Runtime Error window makes Reaper go down.

My Event Log shows Application Error:

EventData

reaper.exe
5.9.8.4
5da10cd3
reaper.exe
5.9.8.4
5da10cd3
40000015
00000000007ffc5e
201c
01d599617d80bc78
C:\Program\REAPER (x64)\reaper.exe
C:\Program\REAPER (x64)\reaper.exe
d4cbf331-cba7-4b52-a3fc-fb55ca4dfe78


Win 10, Reaper 5.984/x64

Sorry
TompaD