REASON 7 inactive in PRO TOOLS 11- AAE error -20010

[blue32]

I just installed REASON 7 and PRO TOOLS 11 on my MacBook Pro, OS X 10.8.3 (Lion). My Mac meets all of the system requirements for both programs.

I opened up old Pro Tools session from PRO TOOLS 7 LE. The Session opens fine, but when I try to insert the REASON 7 into an AUX or Instrument track, I get this message:

AAE error -20010

It says REASON can't be made active.

What does this mean and what can I do?

Thanks,
blue32

[Park Seward]

From Reason's web site:

"Note that 64-bit ReWire needs to be implemented in both the slave application (Reason, Reason Essentials) and your host. Please contact the manufacturer of your ReWire host of choice for compatibility information."