solve app question

[roadrunner]

The solve app doesn't appear to be solving multiple equations with version 10077. In the emulator here is what I do:

1. Reset the solve app, then start it;
2. Type A=B+C into E1 and B=C+D into E2;
3. Press the Num key;
4. Check A and B, uncheck C and D;
5. Type in 7->A, 5->B, 2.1->C, 3->D;
6. Tap Solve and I get a "Cannot find solution" error.

   

Typing in different seeds doesn't help even seeding A and B with the correct answer doesn't help. When I solve each equation separately I get the correct answer.

When I do the exact same thing on the handheld and on another pc, both running 8151, everything works as expected.

   

Based on another thread I posted earlier today nobody else on this forum seems to be having this problem. What could I be doing wrong? Am I overlooking some obscure setting, or just dense?

-road