This happened to me yesterday as well after the Tangled Depths meta while we were waiting for the wall to be smashed. My game showed a network error then upon relogging the game I was sent to Lion's arch and all the loot from the meta including the heroes chest was gone. Even just now I was waiting in Verdant Brink for the meta to start there and the same thing happened, I got the network error then when I relogged I was sent to Lion's arch. This time I didn't even get to do the meta, it just happened while I was waiting there, so no loot lost this time but there is definitely something not right on HoT maps. Update: HoT Meta's appear to be working normal for me again. Not sure if this helped, but here's what I did... Cleared gw2cache folder found in AppData>Local>TempCleared files from the AppData>Roaming>Guild Wars 2 FolderDeleted the Gw2-64.tmp file from the Program Files>Guild Wars_2 FolderRan repair on the GW2 Data archive