Why is there no ‘Rewire’ in my Devices dropdown menu? It wasn’t there on 8.5 either, but I’d assumed it was discontinued. Now other 9 users are saying they’re using Reason Rewire. Where’s mine? 
Please make sure you are running the 64-bit version of Reason. Which specific version number of Reason are you running?
Ah - I get where you’re coming from. It’s Reason 5, build 1.428. It’s 32-Bit. Thanks for your reply.
Is there a bridge to link 32-bit programs to Rewire?
There is not a way to bridge 32-bit programs to Rewire. The program has to be 64-bit.
Reason 7 was (i believe) last version to support 32 bit.
As a matter of fact, there is a way… i have used it in the past to rewire 32 bit reason into 64 bit cubase… its not officially supported but works just fine.
Download and use this…
Not true anymore 
I am rewiring Reason 4 with Cubase 9 successfully with this little app!
Anyone rewireing 32 bit Reason on osx? Any way to make it work wit Q9?