Hello,

It sounds like you may need some more troubleshooting advice, please submit at: https://mtgarena-support.wizards.com/hc/en-us/requests/new and select 'Technical Troubleshooting'.

Thanks!

Getting this as well, but it usually only takes about 10-15 seconds to get through.

Same, happens every launch. Game also crashes on lava background, won’t allow me to play anything. Crashes periodically on victory screen.

Won’t be drafting any time soon with all the crashes.

I have the same issue;

Same thing happens here. My husband's MacBook Pro shows this message at every launch. I am using a MacBook Pro too, but I don't have this message when I launch the game. Why is that happening on one MacBook but not on the other? We have the same version of MacOS so we don't understand... Thanks for any help!

Whenever I load Arena, I get a message saying "An asset error occurred during your last play session. Validating asset files to ensure stability, this may take a while." Once the game loads, it either immediately crashes or crashes very shortly upon entering the game.

Whenever I load Arena, I get a message saying "An asset error occurred during your last play session. Validating asset files to ensure stability, this may take a while." Once the game loads, it either immediately crashes or crashes very shortly upon entering the game.

Whenever I load Arena, I get a message saying "An asset error occurred during your last play session. Validating asset files to ensure stability, this may take a while." Once the game loads, it either immediately crashes or crashes very shortly upon entering the game.

Happens every time for me, but thankfully doesn't usually take too long.

This happens to me on my admittedly older MacBook Pro every time. Even after reinstalling or if I need to reconnect after it finally finishes. Also slows everything else on my laptop, though I’m sure it’s age is involved. Please fix so we can play your game!!

Having the same issue, but haven't experienced any crashes yet. MacOS 10.13.6, late-2011 MacBook Pro.

This is happening to me every time I start the game. After it goes through the validating assets business, the app crashes (MTGA quit unexpectedly, with a Mac crash report). If I click the the Reopen button on that screen, it goes through the "asset error occurred" once again. Usually, the second time around, the game starts successfully. One time today, though, I got a black screen and music with the spinning color wheel and had to force-quit the app.

Confirmed. It's a real pain using this app on a Mac. Starting the app results as described above, additionally it crashes on every single option, be it looking for an opponent, going to the store or mastery tree or whatever.
Not being able to run this app in fullscreen mode on a 16" MacBook Pro is hard enough, but it would be ok if it simply would run

Another mac user here. This happens for me at every launch. The app seems to really slow down my systems, but the Activity Montior Utility gives inconsistant readings on how many resources the app is taking up.

Second launch on for me. The first launch, where it downloaded the assets, just froze the app. I forced it quit after 10 or 15 minutes of a spinning beachball.

Yes! This exact scenario plays out every time I start up. It takes 6-9 minutes or so. Not the worst, but also a bit insufferable. I thought it was just a problem with my computer. I’m running Mac OS 10.15.5.

The same thing happens to me. Mac OSX 10.15.5.

Sometimes the game works after the lengthy loading time, but other times the game crashes/quits unexpectedly the moment I try to enter a ranked BO1 game.

Also happening to me. It takes over 20 min to find the assets too. Happens every time I start it no matter if it was closed correctly or not.

This happens to me too.
I am on MAc OSX 10.15.5
Mac Book Pro 2019

Came here to post this issue.