[tlu] TLU misbehavior

[Carl Rosenfeld]

Greetings Adam,
  I am trying to run TLU on a Mac mini 2018.  The Mini is running
Catalina 10.15.7.  I have installed MacTeX 2020 and TLU 1.49.  Here is
my account of what happens when I start TLU.

Launch TLU.
See "TeX Live Utility wants to make changes."
Enter password and click OK.
TLU opens its main window with columns Package, Status, etc.
TLU opens alert dialog with title "TeX Live Utility Internal Error" and
  text starting "An uncaught exception was raised."
Click Show Details. I have appended below the text that appears in the
   window.

Any thoughts?  Thanks.       Cheers,
----------------
Carl Rosenfeld,  Phone: 803-777-8145, fax: 803-777-3065


Exception Name: NSInternalInconsistencyException
Description: Invalid parameter not satisfying: _installedYear !=
TLMDatabaseUnknownYear
User Info: (null)

0   CoreFoundation                      0x00007fff330b4b57
__exceptionPreprocess + 250
1   libobjc.A.dylib                     0x00007fff6bf455bf
objc_exception_throw + 48
2   CoreFoundation                      0x00007fff330ddd08 +[NSException
raise:format:arguments:] + 88
3   Foundation                          0x00007fff357cfe9d
-[NSAssertionHandler
handleFailureInMethod:object:file:lineNumber:description:] + 191
4   TeX Live Utility                    0x0000000108667dfc
-[TLMEnvironment _getValidServerURL:repositoryYear:fromURL:] + 863
5   TeX Live Utility                    0x0000000108667f4f
-[TLMEnvironment validServerURLFromURL:] + 79
6   TeX Live Utility                    0x000000010862e13e
-[TLMMainWindowController _goHome] + 272
7   TeX Live Utility                    0x000000010862e84c
-[TLMMainWindowController showWindow:] + 484
8   TeX Live Utility                    0x000000010862cefb
-[TLMAppController _continueApplicationDidFinishLaunching] + 257
9   CoreFoundation                      0x00007fff3302e80f
__CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
10  CoreFoundation                      0x00007fff3302e7a3
___CFXRegistrationPost1_block_invoke + 63
11  CoreFoundation                      0x00007fff3302e718
_CFXRegistrationPost1 + 372
12  CoreFoundation                      0x00007fff3302e384
___CFXNotificationPost_block_invoke + 80
13  CoreFoundation                      0x00007fff32ffe4fd
-[_CFXNotificationRegistrar find:object:observer:enumerator:] + 1554
14  CoreFoundation                      0x00007fff32ffd9a9
_CFXNotificationPost + 1351
15  Foundation                          0x00007fff3567b786
-[NSNotificationCenter postNotificationName:object:userInfo:] + 59
16  Foundation                          0x00007fff3570d0dd
__NSThreadPerformPerform + 204
17  CoreFoundation                      0x00007fff33038d52
__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
18  CoreFoundation                      0x00007fff33038cf1
__CFRunLoopDoSource0 + 103
19  CoreFoundation                      0x00007fff33038b0b
__CFRunLoopDoSources0 + 209
20  CoreFoundation                      0x00007fff3303783a
__CFRunLoopRun + 927
21  CoreFoundation                      0x00007fff33036e3e
CFRunLoopRunSpecific + 462
22  HIToolbox                           0x00007fff31c63abd
RunCurrentEventLoopInMode + 292
23  HIToolbox                           0x00007fff31c637d5
ReceiveNextEventCommon + 584
24  HIToolbox                           0x00007fff31c63579
_BlockUntilNextEventMatchingListInModeWithFilter + 64
25  AppKit                              0x00007fff302a9039 _DPSNextEvent
+ 883
26  AppKit                              0x00007fff302a7880
-[NSApplication(NSEvent)
_nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1352
27  AppKit                              0x00007fff3029958e
-[NSApplication run] + 658
28  AppKit                              0x00007fff3026b396
NSApplicationMain + 777
29  TeX Live Utility                    0x000000010862c12a main + 442
30  libdyld.dylib                       0x00007fff6d0edcc9 start + 1
31  ???                                 0x0000000000000001 0x0 + 1