Error core 90k, followed by error code 5003 (October 15, 2013, 5:20pm Eastern)

[EmphHena]

Time: 1:30a EST
Frequency: 5th time in 12 hrs
World name: Exodus
Character name: Emph Hena
NPC name: N/A
Party or solo: Solo

Area and coordinates: Ul'dah/Gridania
Steps:
1. Synthing with 100k+ worth of mats.
2. Screen goes black with error code: "Lost connection to the server"
3. Main Menu, start is greyed out and does not become actionable.
4. Close the application and re-launch if I feel like playing again.
5. Cry deeply.
6. Eat a bagel.
7. Shit on Debora's desk.

[Gotcha]

On Malboro and getting this error too. 3 times and counting. twice in AK and once in Revanence Toll.

My FC is having this error happen regularly too, they are currently in Coil