0014631: UI corruption can trew AV errors - MantisBT

ID	Project	Category	View Status	Date Submitted	Last Update

0014631	MMW v4	Main Panel/Toolbars/Menus	public	2018-01-30 17:15	2019-03-13 20:17

Reporter	peke	Assigned To
Priority	high	Severity	crash	Reproducibility	unable to reproduce
Status	closed	Resolution	fixed
Target Version	4.1.21

Summary	0014631: UI corruption can trew AV errors
Description	If registry info on UI gets corrupted it can throw AV errors no matter what you click in MMW and registry gets accessed. I've tried to determine if some of user scripts created the error, but even after testing one by one we could not replicate in Portable version which works normally. So deleting Registry Interface, Transparency and StatusBars before restart of MMW fixed the issue. ELF file from remote session supplied in Ticket.
Additional Information	TICKET ID WIY-142-68290
Tags	No tags attached.
Attached Files	bug14631.jpg (70,413 bytes) bug14631.jpg (70,413 bytes)

Fixed in build

Ludek 2018-01-30 21:16 developer ~0049569 Last edited: 2018-01-30 21:44	Based on the log there is EOSError "A call to an OS function failed" when calling TWinControl.CreateWnd (Windows function CreateWindowEx). Maybe the error was caused by calling the CreateWindowEx with wrong params (X, Y, Width, Height). Peke indicated that he doesn't have the user's registry entries to analyze. I've tried to simulate the EOSError by supplying wrong params to CreateWindowEx(), but I was unsuccessful. I guess that unless this happens again (and unless we have the registry entries and user data to analyze) then we can just close this issue.

peke 2018-01-31 02:00 developer ~0049570	As talked offline, even all pointed to OS issue manifestation of bug was strange as portable worked: "First show error it is after MMW window is loaded and progress bar closes due the On startup monitor it shows white rectangle bellow Player (I guess he at some point had skin that allow player movement) and after rectangle disappears Error shows. MMW is drown afterwards, and I can click and use it but from time to time error pops out. On exit MMW do not close fully, but it saves all INI parameters, now playing focused node, ... and needs to be killed in task manager"

Ludek 2018-02-05 15:50 developer ~0049577	ok, let's re-open once we have more info and data (registry entries) to analyze. Currently the user can no longer reproduce the issue (after the registry entries deletion).

peke 2018-05-31 20:31 developer ~0050454	Closing, not recurring for now.