"Assertion Failed" ZQuest b735 Crash

I was working in b735. I went to Quest->DMAP. Then a window popped up informing me that "Assertion Failed: Low<=High" and ZQuest crashed.

The quest file was not corrupted, but the timed save didn't work.

EDIT: Just tried it again. In the current version of Zodiac, I tried to edit the Taurus Corridor DMAP. When I double-click on the DMAP name, I get this error:

Assertion failed!

Program: ...
File: .\zsys.cpp
Line: 217

Expression: low <= high

For information on how your program can cause an asertion failure, see the Visual C++ documentation on asserts.

(Press Retry to debug the application - JIT must be enabled)

Clicking "ignore" lets me proceed apparently without crashing. We'll see if the quest file is corrupted...

EDIT2 - Aaaaaand yea that's not good. When I go to save the quest file after a few minutes, ZQuest crashes entirely and dumps me into windows. And it eats the .qst file entirely. Not a trace left.

(I think I'll stick with 718 for awhile, what do you think?)