I just downloaded release 5126 of ide 5.0. There seems to be some licensing problem, because I use ide 4.7 and ide 5.0 
rel 4448 without any problems.
My OS is Windows 7 32 Bit in a VMWare. I installed QNX 6.5.0 from the DVD with administrator privliges, then activated 
the license with my email address, installed QNX 6.5.0 SP1 and replaced my eclipse folder with the 5126 release. The 
message is:

"License Check Failure. Your QNX license could not be obtained, QNX functionality will be disabled.
 Ensure you have valid QNX license installed. Ensure the QNX_CONFIGURATION environment variable is defined correctly and
 is accessible.
  No license found for product 5 ReturnCode=5"

The environment variable QNX_CONFIGURATION is set and I have a valid license file that works with the older releases.

Best regards,
Andre