Balsamiq Community Discussion

Save project window goes blank after MacOS Catalina update

Hi. I seem to be facing an issue after updating to MacOS Catalina. Can’t save or cancel after an action of Saving Project. Had to force quit the application.


  1. Open .bmpr from Finder
  2. Save Project As and I rename the filename
  3. Save Project window goes blank (At this point no button can be clicked except the +)
  4. After >60 secs window back as normal but not save
  5. Can’t close on Cancel but Force Quit

That’s really strange, @trizfez. New OSes can be so much fun…

On my Macbook, Mockups 3 runs fine under Catalina, but I did have to grant it permission to the folder where my projects were stored, so maybe there is some weirdness in there.

First thing’s first, let’s close out of the app completely, head to the local storage folder, and delete MockupsSettings.db. Doing that will help us see if it’s just a wonky upgrade bug, or if something else is going on.

Hello. I’ve encountered the same issue which also happens when you are trying to export to PDF. I granted full disk access to Balsamiq3 and also deleted the MockupSettings.db file but that did not resolve the issue. Looks like it might be something with AdobeAir?

UPDATE: I had been saving the project file and PDF’s in the Microsoft OneDrive folders. Once I changed the file location to anything other than the OneDrive location it worked fine.

Ugh @rmousseau. So sorry for the bother here…

The Catalina update seems to be creating a few odd problems here and there. Can you ensure that you have a copy of your project files saved somewhere safe then remove the existing install of Mockups 3 completely (I use and recommend AppCleaner).

Then download version 3.5.17 and install it and let us know if the issue persists, ok?

Ha! We must have been writing at the exact same time. Great news! Thanks for letting us know.

Thanks for the suggestions @Brendan. The bug kinda comes and goes. I think I manage to get the steps to get this bug.

Bug keeps coming when I export the mockups in the same most recent folder multiple times. Till I read @rmousseau solution to save in another folder. I changed the folder and it is working fine now. Currently I’ve been exporting to a Goolge Drive folder.

The export location window will go blank again when I repeatedly export in the same folder after multiple times of exporting. When this happens I just need to switch to a local folder.

Thanks for your support guys! Appreciate it.

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I am having the same problem with the “Save Project” window. It goes blank and I am unable close it or exit the application. I have to Force Quit.

I have tried all the tips mentioned, including removing Balsamiq with AppCleaner, then reinstalled.

Unfortunately the problem persists under macOS Catalina.

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Hi @ACTIMIRA and sorry for the trouble.

We are working on fixing this bug with macOS Catalina, but it’s proving to be difficult so far. The good news is there is an easy workaround.

If you switch the folder you’re saving to, you should be able to save without issue.

Let me know if it helps, Steve, and sorry again about this issue.

I have the same issue – switching folder does not work :frowning:

Hello @dev-null,

Thanks for the post and welcome to the forums.

Sorry you’re having trouble with this issue - it’s a frustrating one for sure.

Is the folder to which you’re saving a virtual or networked folder (e.g. on iCloud or Dropbox for example). The bug seems to be particularly bad in cases like that.

Can you try the following:

  1. Make sure you have a safe copy of your .BMPR project file(s) in a known folder somewhere - just make sure it’s not the default local store folder.

  2. Run Mockups 3 and open the local store folder. The easiest way to open it is through the menu - Balsamiq Mockups 3 > About Balsamiq Mockups - then click " Open Local Store Folder ":


  1. Quick Mockups 3.

  2. In the local store folder you just opened, delete the file called “MockupsSettings.db

  3. Download the latest version of Mockups 3 from this link (Mockups 3 installer for macOS)

  4. Reinstall Mockups 3 from that installer. You may see an error that the item already exists - just choose " Replace ":


  1. Run Mockups 3 and open one of your projects. Make a minor change (which we can easily undo) and try to save the project, changing the initial folder if necessary. Are you able to save?

Thanks! After the 2 changes, App is not freezing anymore

Hey @dev-null,

Great - thanks for letting me know. It’s possible that the issue will resurface down the line. Simply changing the folder should allow you to save but get back to us if you have further problems. Have a great weekend, my friend.

Same thing happened to me, very frustrating. I figured out intuitively that changing the folders was doing the trick. And then @peldi came to rescue and confirmed. Thanks all!

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Hi Alasdair

I have the same issue, this solution does not fix the problem for me, neither does changing the folder :frowning:

Although the app still autosaves changes, so if I update the mockup it does save changes, I can’t change the name of my mockup and can’t export to PDF (which is what I was trying to do initially)

Do you maybe have any other suggestions of what I could try?

Ugh, sorry about that, @Loes.

Does changing the directory to a local directory (like your desktop) not allow you to save/export as well?

Yes! I succesfully saved it to my desktop! Yay! Thank you!

No problem, Loes.

I’m really sorry that this issue has struck you at all, my friend. We are hoping Adobe/Harman releases an updated version of Adobe Air soon so that we can get it fixed.

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Hello everyone, I have the same problem with @ACTIMIRA as well as @Loes. I followed the instructions from @alasdair. It worked at the very beginning. However, the same problem happened again when I use Balsamiq in the next day. I tried export the PNG to different folders (include Desktop) and also give full file system access permission to Balsamiq but still not working. Any idea? Here is my current version info:

  • Version 3.5.17
  • macOS 10.15.2

Hi @Windson_Yang,

Saving the file to a different local folder usually does the trick so I’m sorry to hear the issue persists on your end. Have you also tried to delete the file called MockupsSettings.db from your local store folder by any chance?

If the issue persists, would you mind sending us an email to so we can take it from there?

We’ll do everything we can to help!