well i found this out when i had the error
DEP white listing
Turn off DEP (Data Execution Prevention)
for R.O.S.E. Online North America. Do this by right clicking My
Computer/Computer and click Properties. In Vista click Advanced system
settings in the left menu. XP users just go to the Advanced tab. Now
click the Settings button at Performance and go to the Data Execution
Prevention tab, select the second option and add the R.O.S.E. Online
North America executable (ROSEonline dot exe in the R.O.S.E. Online North America directory)
to the list. The directory can be found at "C:\Program
Files\Triggersoft\ROSE Online Evolution" unless you selected another
location during setup.
You should end up with something like this: