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QCAD crashes on file save
Posted: Wed Jan 28, 2026 5:43 am
by lloydster
MY OLD VERSION OF QCAD PROFESSIONAL STARTED CRASHING ON FILE SAVE
I HAVE PURCHASED AND DOWNLOADED A NEW VERSION OF QCAP PRO AND INSTALLED IT AND STILL CRASHES ON FILE SAVE OR SAVE AS.
64 BIT SYSTEM ON MSI INSTALL
HAVE BEEN USING THE SYSTEM FOR 4 YEARS NOW WITH NO ISSUES
PLEASE ADVISE OF ANYTHING I CAN DO
I HAVE ATTACHED SOME SCREEN SHOTS OF WHAT HAPPENS AND THE FILES TESTED ON
Re: QCAD CRASHES ON FILE SAVE
Posted: Wed Jan 28, 2026 6:39 am
by CVH
Hi, and welcome to the QCAD forum.
More a topic for the
QCAD Troubleshooting and Problems forum.
All in upper case is considered as shouting online.
- "It is not proper netiquette to TYPE IN ALL CAPS!"
Your drawings and files look sane.
The 'Save As' dialog shows us that you are saving to the '
Windows' folder on drive C:
Isn't that a folder inside the protected area guarded by the Windows UAC?
You will need Admin rights to write there.
It is already a better idea to store user data files in newly created user folders.
Not advisable but you could attempt to start QCAD with Admin rights.
Regards,
CVH
Re: QCAD crashes on file save
Posted: Thu Jan 29, 2026 1:05 am
by lloydster
Sorry about the Caps unintentional
Ran Qcad as administrator but no difference.
It crashes on file open as well as file save
any other ideas to get around this problem
Re: QCAD crashes on file save
Posted: Thu Jan 29, 2026 2:04 am
by CVH
Perhaps it is an issue with the latest release.
So far this is the first report of its kind.
It is known that resetting your config file can solve weird problems.
In the latest edition that can be done from within the application, under the Misc menu.
Otherwise see the tutorial:
Resetting the QCAD Configuration
You might also have a look at:
Application preferences .. File .. Open/Save .. Use system file Dialog
If all fails then perhaps a clean install may help.
The config file is not affected by this, remove it manually.
Re-download the installation package just to be sure.
In any case, I would not store my drawing files in the system folders.
Regards,
CVH
Re: QCAD crashes on file save
Posted: Thu Jan 29, 2026 4:00 am
by lloydster
This issue occurred on my previous install which i have been running for 4 years no problem.
I uninstalled that and reinstalled the new version of the app I purchased.
Have reset config within App but no change still crash
I have also check my virus controller and Qcad is a trusted App
Application preferences .. File .. Open/Save .. Use system file Dialog
this was the setting already
I back my files up to cloud
Re: QCAD crashes on file save
Posted: Thu Jan 29, 2026 4:45 am
by CVH
If both the older suddenly and then the newer release show the same problem ...
... I suspect that it has to do with the location of the files.
What changed just before the older install started to fail?
You can attempt to create a dummy drawing and save that to a 'normal' and local user folder.
Then you might do the same and save it in the cloud.
Last problem would then be the latest backup copy in the cloud.
But I think that this doesn't concerns QCAD, it is probably more system related.
Regards,
CVH
Re: QCAD crashes on file save
Posted: Mon Feb 02, 2026 2:42 am
by lloydster
Thanks for your help.
I have located the problem within the system to a windows update issue which clashed with Qcad and have now restored to a date prior to the crash and Qcad resumed working.
Unluckily i have purchased a new copy of Qcad Pro that wasn't required.
Re: QCAD crashes on file save
Posted: Tue Feb 03, 2026 3:29 pm
by jshay410
Do you know what date you restored to? My program is also crashing on save now and I've done the reset, and uninstall and re-install process mentioned in the thread. Thanks in advance!
Re: QCAD crashes on file save
Posted: Wed Feb 04, 2026 10:20 am
by CVH
Similar report see this
forum topic
Perhaps time to report this on QCAD Bugtracker.
Regards,
CVH
Re: QCAD crashes on file save
Posted: Wed Feb 04, 2026 10:37 am
by Jo Fen
We are experiencing the same issue on two of our laptops: QCAD shuts down on save.
Asus Laptops with Ryzen processors, Windows 11 - most recent update.
HOW DOES REPORT THIS AS A BUG? URGENT!
Re: QCAD crashes on file save
Posted: Wed Feb 04, 2026 10:40 am
by andrew
What (if any) virus scanner do you have installed (e.g. Avast, Norton, Bitdefender, MacAffee, ...)?
Re: QCAD crashes on file save
Posted: Wed Feb 04, 2026 11:33 am
by Jo Fen
We only have Windows security on our laptops. No third party anti-virus or anything like that.
Re: QCAD crashes on file save
Posted: Wed Feb 04, 2026 12:35 pm
by andrew
Thanks. Are you saving to a cloud service or to a local disk?
Re: QCAD crashes on file save
Posted: Wed Feb 04, 2026 1:48 pm
by Jo Fen
Local server on a 1 gigabit line. Not cloud based. Not on laptop's HD.
Re: QCAD crashes on file save
Posted: Wed Feb 04, 2026 1:53 pm
by andrew
Can you try to save the file on the local HD instead?
This might be related to Windows update KB5071142:
https://support.microsoft.com/en-us/top ... 504dd081cb
-> Known issues in this update
If you do have OneDrive or other cloud drives on these machines, try disabling them temporarily to see is that solves the issue.
Also: please indicate if the crash occurs on Save (no dialog) or on "Save As" when a file dialog pops up. This is a major difference as the file dialog might be the problem, not the actual saving.