Ok finally both Plan B and Helm's Deep Reborn appeared in my addons list: http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=171766029

But there is still a problem; when I click subscribe the download isn't successful, only 2.8 mb downloaded but file size is larger than that (90+ mb).
Screenshot:
http://i40.tinypic.com/2zsbhnk.jpg
The item loads when I start the game, but when the loading is done it never appears in the addons list: http://psteamcommunity.yuanyoumao.com/id/SeriouS_Samurai/screenshot/615027034712588491

It's exactly the same problem which I reported earlier here but with another item: http://psteamcommunity.yuanyoumao.com/groups/L4D2WSVB/discussions/0/846961716336215597/

Seems to be working fine now, the upload was successful:

http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=121068229

I can't upload the latest version of my map.

Screenshot:

http://i42.tinypic.com/34eb5v8.jpg

Keep getting the error "Failed to update file! Please try again later."

I will try to upload again later.

Additional information: When I start the game I can see the item loading but it never appears in the addons list, and only the picture (.jpg) appears in /left4dead2/addons/workshop folder while the .vpk is not there.

Just now I subscribed to this item:

http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=164537090

The download was not successful at all. I took a screenshot which can be seen here:

http://i44.tinypic.com/b9i0id.jpg

It said I was downloading the item at 4,268,911,872.0 GB/S (CURRENT RATE), the value didn't go up or down it was just stuck at that number.

I had 1,024 KB / 183,3 MB downloaded and 0 / 1 item completed. Time remaining no number shown.

In the next screenshot which I took about a minute after, which can be seen here:

http://i43.tinypic.com/zul0t3.jpg

It said 1 item complete, however the item didn't really download as only 1,024 KB had been downloaded and the item's file size is larger than that.

I tried restarting the game etc. which didn't solve the problem. This is the same problem which people have reported here: http://psteamcommunity.yuanyoumao.com/workshop/filedetails/discussion/121068229/864973123442976825/

17. In multiplayer options it would be great if there was an option to enable/disable sprays, and maybe people want to have sprays enabled but they want the files in materials/temp folder to automatically delete when you exit the game because some sprays are very inappropriate. I had over 500 vtf files in materials/temp folder which I had to manually delete.

Multiplayer options: Sprays: Enable and save / Enable and delete when exit / Disable

Will something be done about consistency errors? A lot of people can't play custom maps for L4D2 due to consistency errors.

Will there be improvements to the main menu?: http://psteamcommunity.yuanyoumao.com/groups/L4D2WSVB/discussions/0/810924133986101134/

...and stopping those who cheat using server plugins (survival mode)?: http://psteamcommunity.yuanyoumao.com/groups/L4D2WSVB/discussions/0/810923580540365605/

What about all the featured maps/campaigns, will the latest versions of these also be added to the servers?