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Crash when dismounting TrueCrypt drives
Posted: 02 Nov 2009 05:11
by byates
XYplorer crashes when I dismount a TrueCrypt drive. I am running XYplorer version 8.50.0036 and using TrueCrypt version 6.3 on a fresh install of Windows XP, SP3. Sometimes XYplorer gives an error message like this (but not always):
Code: Select all
Error 91 (0000005B)
Desc Object variable or With block variable not set
Dll 3
Proc Watch2
Source XYplorer
XY ver 8.50.0036
OS Windows XP (Service Pack 3)
Date 11/1/2009 11:01:03 PM
I tested mounting and unmounting drives with the SUBST command from a dos prompt and got no errors or crashes.
Re: Crash when dismounting TrueCrypt drives
Posted: 02 Nov 2009 09:29
by admin
byates wrote:Sometimes XYplorer gives an error message like this (but not always): ...
You mean sometimes it does not crash, or sometimes it crashes without error? In case of the former (which I think you meant) , it's hard to debug (without having TrueCrypt).
Here's one thing you can do: enter this into the address bar and press <enter>:
Now you get a message box after dismounting a TrueCrypt drive. What does it say?
Re: Crash when dismounting TrueCrypt drives
Posted: 02 Nov 2009 15:08
by byates
XY always crashes after the drive dismount. Sometimes it gives the error message but most of the time it does not. I turned on logging as you suggested and ran the test several times. The test consist of simply starting XY, mounting a drive, dismounting a drive. The crash happens after the dismount. Here are the log windows I got:
Mount drive
- ScreenShot001.png (11.49 KiB) Viewed 3198 times
Dismount drive
(got two of these messages back to back)
- ScreenShot002.png (11.37 KiB) Viewed 3198 times
(on some of the runs I got this message, but not every time)
- ScreenShot004.png (11.36 KiB) Viewed 3198 times
Re: Crash when dismounting TrueCrypt drives
Posted: 02 Nov 2009 15:53
by TheQwerty
I haven't been able to reproduce this, could you try creating a new small TrueCrypt volume and seeing if XY crashes; to ensure it's not specific to that particular volume?
That said, I only tested on a standard volume using the default settings and using an extracted (instead of installed) copy of TrueCrypt 6.3. I know on 6.2 I use to have a few problems trying to access a mounted volume, but that wasn't exclusive to XY, and I've since lost the need for TrueCrypt.
Re: Crash when dismounting TrueCrypt drives
Posted: 02 Nov 2009 16:13
by byates
Thanks for trying to reproduce this. I have verified that it crashes with three different volumes. I don't have any problems accessing the drives, just when dismounting. I just reformatted and reinstalled XP pro this weekend (to replace a bad HDD) so everything is as clean as can be. I have anti-virus turned off, if that matters.
Re: Crash when dismounting TrueCrypt drives
Posted: 02 Nov 2009 17:01
by byates
Some more info:
1) I believe that this is not a new issue. Starting this weekend is the first time that I have started mounting and dismounting TrueCrypt volumes. Prior to this point I just mounted a volume and left it mounted until power-off.
2) I just used the tool VCdControlTool (from MicroSoft) to mount an ISO image as a drive. XY did not crash when I dis-mounted the ISO image.
So, in summary, XY does only seems to crash when dismounting TrueCrypt drives. I does not crash when dismounting SUBST drives or VCdControlTool ISO drives.
Re: Crash when dismounting TrueCrypt drives
Posted: 02 Nov 2009 20:33
by admin
Difficult. I tried something anyway. Check next BETA...
Re: Crash when dismounting TrueCrypt drives
Posted: 02 Nov 2009 20:55
by admin
admin wrote:Difficult. I tried something anyway. Check next BETA...
No, please check this special EXE:
http://www.xyplorer.com/download/XYplorer_8.50.0038.zip
Still crashes when dismounting TrueCrypt drives?
Re: Crash when dismounting TrueCrypt drives
Posted: 02 Nov 2009 20:59
by byates
Still crashes....
Re: Crash when dismounting TrueCrypt drives
Posted: 02 Nov 2009 21:05
by admin
byates wrote:Still crashes....
Argh. So if I got you right, it either crashes (app goes down without notice) or you get an error "Error 91" and can continue. Correct?
Re: Crash when dismounting TrueCrypt drives
Posted: 02 Nov 2009 21:20
by byates
That is correct, except for the continue part. XY always 'goes away' after the crash or the error 91. BTW, I haven't seen the error 91 in a while. Now I just get the standard windows exception "do you want to debug..." crash notification.
Re: Crash when dismounting TrueCrypt drives
Posted: 02 Nov 2009 21:36
by admin
byates wrote:That is correct, except for the continue part. XY always 'goes away' after the crash or the error 91. BTW, I haven't seen the error 91 in a while. Now I just get the standard windows exception "do you want to debug..." crash notification.
Ok, how long would it take me to download and install TrueCrypt and reproduce the error?
Re: Crash when dismounting TrueCrypt drives
Posted: 02 Nov 2009 21:54
by byates
True crypt is trival to download and install. It is very light weight.
http://www.truecrypt.org/. Create a small (10MB) file volume (use all defaults) and mount it one any available drive.
Re: Crash when dismounting TrueCrypt drives
Posted: 02 Nov 2009 22:16
by admin
byates wrote:True crypt is trival to download and install. It is very light weight.
http://www.truecrypt.org/. Create a small (10MB) file volume (use all defaults) and mount it one any available drive.
OK, I think I got it. The problem was indeed the back-to-back notification. For unknown reasons TrueCrypt sends the DRIVEREMOVED message 2 times. The second time made XY crash for reasons that were very trivial to fix. Upload coming...
Nice program BTW this truecrypt.
Keeper...
Re: Crash when dismounting TrueCrypt drives
Posted: 02 Nov 2009 22:43
by byates
Great! Thanks for the (amazingly) quick turn-around.
TrueCrypt is a nice program. I had a laptop stolen once and learned my lesson. Now all sensitive files are on TrueCrypt volumes that I mount only when needed.