I fixed my trading post on my own after some research.
You can try this at your OWN RISK
- Close the game
- Search for a folder located in TEMP folder in windows, called “gw2cache-{*random number and letters*}”
-Delete it
-Relog to game and check trading post should be fixed
My Os is win7 64bits.
I can confirm this worked for me. Everything within the Black Lion Trading Post was working except for the gem store. The main tabs would show up, but nothing else would. It broke after the February 26th update and has been broken since.
Also using Windows 7 64-bit.
Just to explain a bit further, the folder in question can be located on Windows 7 (and presumably Windows 8 and probably Vista) under C:\ > Users > AppData > Local > Temp > gw2cache followed by random numbers and letters. Make a backup of this folder (although it shouldn’t matter since it’s automatically regenerated upon the next launch of GW2, but it’s a good practice in any case) and then delete it.