Ok so I've already uploaded a co-op map to the workshop. Works fine. Now I wanted to upload a map that has custom content. Used Pakrat to pack the materials, models, sounds into the bsp. but when I try to upload the map to the workshop it says.... "Failed to write file mymaps\mp_coop_castle.bsp to Steam Cloud! Please verify the filename and try again." Anyone know the fix to this?

Could the name be too long for the workshop? It's just a guess, but you could try to use a shorter name for the .bsp and see if it uploads.

No its mp_coop_castle. Pretty short

Right. Sorry, no idea then.

yup. this is a pain. Do you think maybe the file is too big? I dont know the max size for a map.

100mb

yup I'm past that. wish i could compress.. 128,098KB
Guess I can't upload this map to the workshop then.

you could make it smaller...

Oh, lol - I was going to suggest that. But before making another pointless suggestion like the obviously wrong one with the filename I had a look at your upload here on twp. There it says it's only 60MB so I shut up. But that's obviously only the packed size - unpacked it's a lot bigger.

I remember your map having several areas that have to be solved after one another. Others have split their map up into two uploads for the workshop in such cases.

128 MB for a single map? holy crap :/

Optimise and cut! (Do it)

Not even gunna mess with it. People want to play it they going to have to get on TWP.
And its 128MB with pakrat, all the custom stuff. The map alone is 55.5MB
Also. anyone else notice sounds being miss timed when you put the map in the workshop? I don't think the wait till the previous sound ends works. Sounds I've made keep overlapping.
Edit
What I wrote above was the denial stage of having to do 3 1/2hours of work. but I did cut my map into to parts and is on the workshop now.

Baca, maybe this thread could help you to reduce your map's size and to have all the map only in one part in the workshop...

I don't mean to bring a thread back from the dead, but how did you manage to upload a Co-op map with p2publish? It says "Failed to upload map". I have the global_pti_ents instance included. It's only 9000kb. Anything I'm doing wrong?

Edit: err. nevermind. Hit publish again and it worked. Ok then xD