And this is what I got when I selected the old, corrupted Library. Occasionally the beachball would stop spinning, but usually only for a few seconds before starting up again. While it was spinning, I could move the main window around, but nothing else responded either in that window or from the menu. I launched Activity Monitor during this time and it was showing that iTunes was using just about 100% of the CPU and would intermittently indicate that iTunes was not responding. It's been near 30 minutes and I still have not been able to do anything in iTunes.
11/25/15 11:11:09.427 AM iTunes[12947]: BUG in libdispatch client: kevent[EVFILT_MEMORYSTATUS] add: "Operation not supported" - 0x2d
11/25/15 11:11:09.522 AM pkd[337]: enabling pid=12947 for plug-in com.adobe.accmac.ACCFinderSync(1.4.2.105) FC192395-9103-4EA6-AA45-224001F65F57 /Applications/Utilities/Adobe Creative Cloud/CoreSync/Core Sync.app/Contents/PlugIns/ACCFinderSync.appex
11/25/15 11:11:09.528 AM iTunes[12947]: assertion failed: 15B42: libxpc.dylib + 79134 [3E09C275-A33B-357A-B0AB-A2DDF88EC9D5]: 0x89
11/25/15 11:11:09.534 AM taskgated[177]: no application identifier provided, can't use provisioning profiles [pid=12948]
11/25/15 11:11:09.582 AM ACCFinderSync[12948]: Failed to connect (colorGridView) outlet from (NSApplication) to (NSColorPickerGridView): missing setter or instance variable
11/25/15 11:11:09.582 AM ACCFinderSync[12948]: Failed to connect (view) outlet from (NSApplication) to (NSColorPickerGridView): missing setter or instance variable
11/25/15 11:11:09.774 AM com.apple.xpc.launchd[1]: (com.apple.xpc.launchd.domain.user.501) Service "com.apple.xpc.launchd.unmanaged.ACCFinderSync.12948" tried to hijack endpoint "ACCFinderInnerExtensionHost" from owner: com.apple.xpc.launchd.unmanaged.ACCFinderSync.379
11/25/15 11:11:09.775 AM ACCFinderSync[12948]: building singleton CFMessage dispatcher
11/25/15 11:11:23.180 AM WindowServer[178]: disable_update_timeout: UI updates were forcibly disabled by application "iTunes" for over 1.00 seconds. Server has re-enabled them.
11/25/15 11:11:23.271 AM WindowServer[178]: common_reenable_update: UI updates were finally reenabled by application "iTunes" after 1.09 seconds [0.92fps] (server forcibly re-enabled them after 1.00 seconds [1.00fps])
11/25/15 11:11:24.555 AM iTunes[12947]: ApplePushService: APSConnection being used without a delegate queue
11/25/15 11:11:30.512 AM CalendarAgent[330]: [com.apple.calendar.store.log.caldav.coredav] [Refusing to parse response to PROPPATCH because of content-type: [text/plain; charset="utf-8"].]
11/25/15 11:11:30.595 AM CalendarAgent[330]: [com.apple.calendar.store.log.caldav.coredav] [Refusing to parse response to PROPPATCH because of content-type: [text/plain; charset="utf-8"].]
11/25/15 11:12:30.000 AM syslogd[43]: ASL Sender Statistics
11/25/15 11:13:02.000 AM kernel[0]: process iTunes[12947] thread 12992158 caught burning CPU!; EXC_RESOURCE supressed due to audio playback
11/25/15 11:13:16.583 AM Mail[11267]: Parameter Error in /BuildRoot/Library/Caches/com.apple.xbs/Sources/passwordserver_saslplugins/pass wordserver_saslplugins-188/plain_clienttoken.c near line 195
11/25/15 11:13:16.584 AM Mail[11267]: Failed to start the SASL connection
SASL(-7): invalid parameter supplied: Parameter Error in /BuildRoot/Library/Caches/com.apple.xbs/Sources/passwordserver_saslplugins/pass wordserver_saslplugins-188/plain_clienttoken.c near line 195
11/25/15 11:13:16.592 AM Mail[11267]: Parameter Error in /BuildRoot/Library/Caches/com.apple.xbs/Sources/passwordserver_saslplugins/pass wordserver_saslplugins-188/plain_clienttoken.c near line 195
11/25/15 11:13:16.592 AM Mail[11267]: Failed to start the SASL connection
SASL(-7): invalid parameter supplied: Parameter Error in /BuildRoot/Library/Caches/com.apple.xbs/Sources/passwordserver_saslplugins/pass wordserver_saslplugins-188/plain_clienttoken.c near line 195
11/25/15 11:18:16.465 AM Mail[11267]: Parameter Error in /BuildRoot/Library/Caches/com.apple.xbs/Sources/passwordserver_saslplugins/pass wordserver_saslplugins-188/plain_clienttoken.c near line 195
11/25/15 11:18:16.465 AM Mail[11267]: Failed to start the SASL connection
SASL(-7): invalid parameter supplied: Parameter Error in /BuildRoot/Library/Caches/com.apple.xbs/Sources/passwordserver_saslplugins/pass wordserver_saslplugins-188/plain_clienttoken.c near line 195
11/25/15 11:18:16.466 AM Mail[11267]: Parameter Error in /BuildRoot/Library/Caches/com.apple.xbs/Sources/passwordserver_saslplugins/pass wordserver_saslplugins-188/plain_clienttoken.c near line 195
11/25/15 11:18:16.466 AM Mail[11267]: Failed to start the SASL connection
SASL(-7): invalid parameter supplied: Parameter Error in /BuildRoot/Library/Caches/com.apple.xbs/Sources/passwordserver_saslplugins/pass wordserver_saslplugins-188/plain_clienttoken.c near line 195
11/25/15 11:22:30.000 AM syslogd[43]: ASL Sender Statistics
11/25/15 11:23:16.434 AM Mail[11267]: Parameter Error in /BuildRoot/Library/Caches/com.apple.xbs/Sources/passwordserver_saslplugins/pass wordserver_saslplugins-188/plain_clienttoken.c near line 195
11/25/15 11:23:16.434 AM Mail[11267]: Failed to start the SASL connection
SASL(-7): invalid parameter supplied: Parameter Error in /BuildRoot/Library/Caches/com.apple.xbs/Sources/passwordserver_saslplugins/pass wordserver_saslplugins-188/plain_clienttoken.c near line 195
11/25/15 11:23:16.435 AM Mail[11267]: Parameter Error in /BuildRoot/Library/Caches/com.apple.xbs/Sources/passwordserver_saslplugins/pass wordserver_saslplugins-188/plain_clienttoken.c near line 195
11/25/15 11:23:16.435 AM Mail[11267]: Failed to start the SASL connection
SASL(-7): invalid parameter supplied: Parameter Error in /BuildRoot/Library/Caches/com.apple.xbs/Sources/passwordserver_saslplugins/pass wordserver_saslplugins-188/plain_clienttoken.c near line 195
11/25/15 11:23:39.801 AM Safari[313]: tcp_connection_tls_session_error_callback_imp 3545 __tcp_connection_tls_session_callback_write_block_invoke.434 error 22
11/25/15 11:28:16.509 AM Mail[11267]: Parameter Error in /BuildRoot/Library/Caches/com.apple.xbs/Sources/passwordserver_saslplugins/pass wordserver_saslplugins-188/plain_clienttoken.c near line 195
11/25/15 11:28:16.509 AM Mail[11267]: Failed to start the SASL connection
SASL(-7): invalid parameter supplied: Parameter Error in /BuildRoot/Library/Caches/com.apple.xbs/Sources/passwordserver_saslplugins/pass wordserver_saslplugins-188/plain_clienttoken.c near line 195
11/25/15 11:28:16.510 AM Mail[11267]: Parameter Error in /BuildRoot/Library/Caches/com.apple.xbs/Sources/passwordserver_saslplugins/pass wordserver_saslplugins-188/plain_clienttoken.c near line 195
11/25/15 11:28:16.510 AM Mail[11267]: Failed to start the SASL connection
SASL(-7): invalid parameter supplied: Parameter Error in /BuildRoot/Library/Caches/com.apple.xbs/Sources/passwordserver_saslplugins/pass wordserver_saslplugins-188/plain_clienttoken.c near line 195
11/25/15 11:29:30.514 AM CalendarAgent[330]: [com.apple.calendar.store.log.caldav.coredav] [Refusing to parse response to PROPPATCH because of content-type: [text/plain; charset="utf-8"].]
11/25/15 11:29:30.600 AM CalendarAgent[330]: [com.apple.calendar.store.log.caldav.coredav] [Refusing to parse response to PROPPATCH because of content-type: [text/plain; charset="utf-8"].]
11/25/15 11:31:01.983 AM locationd[83]: NETWORK: requery, 0, 0, 0, 0, 10, items, fQueryRetries, 0, fLastRetryTimestamp, 470166867.5
11/25/15 11:31:02.367 AM Spotlight[377]: XPC connection was invalidated
11/25/15 11:31:02.000 AM kernel[0]: Sandbox: SpotlightNetHelp(387) deny(1) file-read-data /Users/bobdenst/Library/Preferences/.GlobalPreferences.plist
11/25/15 11:31:02.452 AM Spotlight[377]: XPC connection was invalidated
11/25/15 11:31:02.956 AM Spotlight[377]: XPC connection was invalidated
11/25/15 11:31:19.953 AM SpotlightNetHelper[387]: tcp_connection_tls_session_error_callback_imp 106 __tcp_connection_tls_session_callback_write_block_invoke.434 error 22
11/25/15 11:31:19.953 AM SpotlightNetHelper[387]: tcp_connection_tls_session_error_callback_imp 105 __tcp_connection_tls_session_callback_write_block_invoke.434 error 22
11/25/15 11:32:30.000 AM syslogd[43]: ASL Sender Statistics