Can anybody add bots on dm1 map?
When I select "add bot" from the menu, I get

"Error: SV_Error: Program error"

All other maps are fine.

Can you confirm what version of the frogbots you are running? I've tried with Trinca's version and can't replicate here.

I just tried it with the latest nQuake package, and I was able to get the error.

After a bit more testing & head-scratching... it's caused by using the GPL version of dm1.bsp, and the .ent files are different. The definitions of waypoints in frogbots mod relies on the static entities being the same, so if this is incorrect then you're likely to get crashes. This can be fixed by supplying the dm1.ent file from the pak1.pak/dm1.bsp in the gpl_maps.pk3 (I've successfully tested with putting the .ent file in qw/maps), but I'm not sure of the ins and outs of nquake so will leave it for someone else to comment on that.