I've compiled brandy 1.20.1 on VirtualRPC-Adjust RISCOS 4.39, with gcc (GCC) 4.1.2 (GCCSDK GCC 4.1.2 Release 2).
When this BASIC program:
SYS "Wimp_Initialise",200,&4B534154,"Blinds" TO wimpvers%,taskhandle%
SYS "Wimp_CloseDown"
is called from an Obey file with
brandy -quit test
it fails on the first line, and this text is sent to the DeskTop:
Type mismatch: numeric variable wanted at line 10.
This bug is causing the !Blinds program to fail.
!Blinds and the test case work properly with Brandy 1.20.