Crash when dismounting TrueCrypt drives

[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.

[admin]

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>:

Code: Select all

::logchange 1

Now you get a message box after dismounting a TrueCrypt drive. What does it say?

[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 3197 times

Dismount drive
(got two of these messages back to back)

ScreenShot002.png (11.37 KiB) Viewed 3197 times

(on some of the runs I got this message, but not every time)

ScreenShot004.png (11.36 KiB) Viewed 3197 times

[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.

[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.

[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.

[admin]

Difficult. I tried something anyway. Check next BETA...

[admin]

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?

[byates]

Still crashes....

[admin]

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?

[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.

[admin]

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?

[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.

[admin]

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...

[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.