TZUTC: -0800
MSGID: 58818.sync_sys@1:103/705 2d79a548
PID: Synchronet 3.21a-Linux master/88b423313 Sep 29 2025 GCC 12.2.0
TID: SBBSecho 3.31-Linux master/d39e01091 Nov 03 2025 GCC 12.2.0
BBSID: VERT
CHRS: ASCII 1
FORMAT: flowed
open https://gitlab.synchro.net/main/sbbs/-/issues/1006

It seems that if a user had saved an old SlyEdit configuration, it's expecting
an existing option and failing.

```
nov 11 15:50:53 scarlet synchronet[3299758]: term Node 1  Executing
external: ?slyedit /sbbs/nodes/node1/MSGTMP DCT
nov 11 15:50:53 scarlet synchronet[3299758]: term Node 1 
!JavaScript  /sbbs/exec/SlyEdit_Misc.js line 4437: TypeError: behaviorSettings
is null
nov 11 15:50:53 scarlet sbbs[3299758]: [126B blob data]
nov 11 15:50:53 scarlet synchronet[3299758]: term Node 1  '?slyedit
/sbbs/nodes/node1/MSGTMP DCT' returned -1
```
--- SBBSecho 3.31-Linux
 * Origin: Vertrauen - [vert/cvs/bbs].synchro.net (1:103/705)
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