For me, this addon don't work...so sad beacause it's probably very fun. I realy need it to play with my friends. I have also download ''GTA V Canis Bodhu Militarized'' and ''GTA V Nagasaki Shotaro''
Please resolve it ;(

This doesn't require anything. You're experiencing the rare case of addons never updating. Usually deleting the .gma file works (it's located in your addons folder and it's called cadillac_gage_textron_lav-300_pack_ragdollsprops_1684327243.gma). Once you've deleted that, restart gmod and sit around in the menu for like 5 minutes or so to let your computer download the addon and once that's done hopefully it should work.

This ain't foolproof so it's not a guaranteed 100% fix, because my friend has an alternate steam account that's got the same problem as well and in his case it works, but only when the computer feels like it wants the addon to work. (because a lot of other addons refuse to work on his end.)