Description of problem:
After INT upgrade,my large gear size app's status is shown unknown.My app was stopped before upgrade. I try to start my app,but could not start successfully,it returns "Server returned an unexpected error code: 504".
I also could not create new large app in INT,also returns "Server returned an unexpected error code: 504"
My account is wsun+2,my app name is py6s,my app's uuid is 527b1ff003ef64611b00017d

The following app also has the same issue.
lxia+migrate, app name is jenkins ( uuid: 527af7216cec0ef954000282 )

Version-Release number of selected component (if applicable):
INT(devenv_4052)

How reproducible:
Always

Steps to Reproduce:
1.Create a large gear size app before INT upgrade
2.Stop the app before INT upgrade
3.INT upgrade
4.Check my app's status
5.Try to start/control my app
6.Try to create new app with large gear size

Actual results:
4.[wsun@dhcp-8-229 test]$ rhc app-show py6s --state
Cartridge mysql-5.1 is unknown
Cartridge postgresql-8.4 is unknown
Cartridge python-2.6, haproxy-1.4 is unknown
Cartridge mongodb-2.2 is unknown

5.[wsun@dhcp-8-229 test]$ rhc app-start py6s
Server returned an unexpected error code: 504

6.It returns "Server returned an unexpected error code: 504"

Expected results:
App's status should be shown stopped and could create a new large app successfully

Additional info:
top - 02:31:54 up 1 day,  1:57,  0 users,  load average: 0.10, 0.13, 0.09
Tasks:   3 total,   1 running,   2 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.8%us,  3.4%sy,  0.0%ni, 95.8%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:  17390776k total,  4460440k used, 12930336k free,   492860k buffers
Swap:  6249976k total,        0k used,  6249976k free,  2536872k cached
   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                                
360510 2434      20   0  102m 2684  852 S  0.0  0.0   0:00.01 sshd                                                                                   
360511 2434      20   0  106m 2044 1420 S  0.0  0.0   0:00.15 bash                                                                                   
360720 2434      20   0 14908 1136  940 R  0.0  0.0   0:00.09 top