Unable to create / unlock wallet (OSX Sierra, 1.4.0)

[ghost]

System Information

Operating System: OSX Sierra 10.12.6 (fresh install, no pending system or application updates)
Desktop Wallet Client: 1.4.0

Steps to Reproduce

1. Open Desktop Wallet 1.4.0 for the first time
2. At "Create Wallet" dialogue, enter new password.
3. Read and Agree to Terms of Service
4. Click "Create Wallet" button
5. Spinner appears for approximately 15 seconds, then disappears - no other change (client still shows "Create Wallet" screen)

After 5, developer console logs one instance of this error:
(Applications/MobileCoin Wallet.app/Contents/Resources/app.asar/dist/renderer.prod.js)

VM76 renderer.prod.js:2 Uncaught (in promise) Error: Unknown Rocket error
     at VM76 renderer.prod.js:2  
     at c (VM76 renderer.prod.js:8)  
     at Generator._invoke (VM76 renderer.prod.js:8)  
     at Generator.next (VM76 renderer.prod.js:8)  
     at Nr (VM76 renderer.prod.js:2)  
     at i (VM76 renderer.prod.js:2)

and 27 instances of this error:
(http:// localhost:9090/wallet)

Failed to load resource: net::ERR_CONNECTION_REFUSED

Steps 1-5 produce the following logs:
desktop_wallet_2021-09-27.log
full-service-2021-09-26-18:12:21.log

6. Close client application ("no, stop syncing and close")
7. Re-open application - now shows "Unlock Wallet"

After 7, developer console shows one error each identical to above.

8. Enter previously created password
9. Click "Unlock Wallet" button

After 9, developer console shows 26 instances of the following error:

POST http://localhost:9090/wallet net::ERR_CONNECTION_REFUSED
(anonymous) @ VM76 renderer.prod.js:2
e.exports @ VM76 renderer.prod.js:2
e.exports @ VM76 renderer.prod.js:2
Promise.then (async)
l.request @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
c @ VM76 renderer.prod.js:8
(anonymous) @ VM76 renderer.prod.js:8
(anonymous) @ VM76 renderer.prod.js:8
Xt @ VM76 renderer.prod.js:2
i @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
c @ VM76 renderer.prod.js:8
(anonymous) @ VM76 renderer.prod.js:8
(anonymous) @ VM76 renderer.prod.js:8
Nr @ VM76 renderer.prod.js:2
i @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
c @ VM76 renderer.prod.js:8
(anonymous) @ VM76 renderer.prod.js:8
(anonymous) @ VM76 renderer.prod.js:8
ha @ VM76 renderer.prod.js:2
i @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
c @ VM76 renderer.prod.js:8
(anonymous) @ VM76 renderer.prod.js:8
(anonymous) @ VM76 renderer.prod.js:8
Fw @ VM76 renderer.prod.js:2
i @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
c @ VM76 renderer.prod.js:8
(anonymous) @ VM76 renderer.prod.js:8
(anonymous) @ VM76 renderer.prod.js:8
Fw @ VM76 renderer.prod.js:2
i @ VM76 renderer.prod.js:2
Promise.then (async)
Fw @ VM76 renderer.prod.js:2
i @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
onSubmit @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
Promise.then (async)
(anonymous) @ VM76 renderer.prod.js:2
(anonymous) @ VM76 renderer.prod.js:2
Ue @ VM76 renderer.prod.js:8
Ye @ VM76 renderer.prod.js:8
(anonymous) @ VM76 renderer.prod.js:8
wn @ VM76 renderer.prod.js:8
En @ VM76 renderer.prod.js:8
(anonymous) @ VM76 renderer.prod.js:8
Me @ VM76 renderer.prod.js:8
(anonymous) @ VM76 renderer.prod.js:8
Tn @ VM76 renderer.prod.js:8
Qt @ VM76 renderer.prod.js:8
Jt @ VM76 renderer.prod.js:8
t.unstable_runWithPriority @ VM76 renderer.prod.js:8
Uo @ VM76 renderer.prod.js:8
Ie @ VM76 renderer.prod.js:8
Kt @ VM76 renderer.prod.js:8
Show 17 more frames

steps 7-9 produce the following logs:

desktop_wallet_2021-09-27.log
full-service-2021-09-26-19:08:23.log

After 9, I am able to delete wallet and start the process over with identical results.

[sugargoat]

Thank you for the detailed report! We will be looking into this

[ghost]

Related to troubleshooting this:
lsof -i :9090 shows no output before, during, or after any of the above steps

ps x shows the following running processes:

MobileCoin Wallet 
MobileCoin Wallet Helper (GPU) --type=gp
MobileCoin Wallet Helper --type=utility --util 
MobileCoin Wallet Helper (Renderer)

[two-x]

+1 experiencing exact same issue. (only difference is that I'm on OSX Catalina 10.15.7.

[YuPototo]

+1.
Moterey 12.3.1