I'll provide an example quest containing the problematic subscreen, since I have not been able to replicated it, and I'm unsure what even causes it: Download for the quest file
The specific steps taken to cause the crash:
1. Have an arrow item in your inventory but not any other equip-able items.
2. Press start to open the active subscreen.
I found this bug in 2.52 (?) (v2.50 Build 29 is listed in about), one of the more recent stable releases. I sent the quest file to Avataro for a second opinion and it crashes for him to in 2.53 beta 8.
Something is obvious wrong with the subscreen, but neither he nor I could seem to replicate it. Usually when something is a problem with the subscreen it just stops working though, rather than straight up causing ZC to crash.