Hello,
SWFs used to play normally on Modul8 until today.
I had this problem in the past.  Official support could not help.  Decided to do fresh install of Snow Leopard.  Problem fixed.  Now have same problem again.
No errors, no messages, SWFs import fine in M8 library, play fine in Safari.  Any ideas?  Any help highly appreciated.  I need to perform tomorrow.
Thanks!
Info from Modul8
Modul8 2.6.1 build 1105
QuickTime 7.6.6 (1756)
Adobe Flash 10.1.102.64 (10.1.102.64)
Hardware Overview:
  Model Name:	MacBook Pro
  Model Identifier:	MacBookPro6,1
  Processor Name:	Intel Core i7
  Processor Speed:	2.66 GHz
  Number Of Processors:	1
  Total Number Of Cores:	2
  L2 Cache (per core):	256 KB
  L3 Cache:	4 MB
  Memory:	4 GB
  Processor Interconnect Speed:	4.8 GT/s
  Boot ROM Version:	MBP61.0057.B0C
  SMC Version (system):	1.57f16
  Serial Number (system):	C02CJ0W8DD6Y
  Hardware UUID:	29742013-4F24-53DA-AB0F-B487AB0179BC
  Sudden Motion Sensor:
  State:	Enabled