The app actually ran rather well the last 2 days. Now, after nothing happened (i.e., no updates or anything), when the app comes up, it refreshes with no error but as soon as I click on one of the phone numbers, it disappears. Here's the report in Events:

Fault bucket 1250576815507020418, type 5Event Name: MoAppCrashResponse: Not availableCab Id: 0Problem signature:P1: Microsoft.YourPhone_1.20051.93.0_x64__8wekyb3d8bbweP2: praid:AppP3: 1.20051.93.0P4: 5ed5b550P5: combase.dllP6: 10.0.18362.900P7: 90957831P8: 80040064P9: 000000000002387aP10: Attached files:\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WERF7AF.tmp.mdmp\\?\C:\ProgramData\Microsoft\Win dows\WER\Temp\WERF956.tmp.WERInternalMetadata.xml\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WERF9 76.tmp.xml\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WERF974.tmp.csv\\?\C:\ProgramData\Microsoft\ Windows\WER\Temp\WERF994.tmp.txtThese files may be available here:\\?\C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_Microsoft.YourPh_7326b7d533ba77 7ed7e315c3eb9e1a59c4fbf3d7_314fa077_519fa2a4-1d95-4962-a911-e8fefb260853Analysis symbol: Rechecking for solution: 0Report Id: eda0f22a-e277-40e9-9df1-ed8cf7e651caReport Status: 268435456Hashed bucket: ba45b12b464ec892a15af0fce4a29a82Cab Guid: 0


And also this:

Faulting application name: YourPhone.exe, version: 1.20051.93.0, time stamp: 0x5ed5b550Faulting module name: YourPhone.Views.dll, version: 1.20051.93.0, time stamp: 0x5ed5b40fException code: 0xc000027bFault offset: 0x000000000004807fFaulting process id: 0x1480Faulting application start time: 0x01d641e2cdeb9d7aFaulting application path: C:\Program Files\WindowsApps\Microsoft.YourPhone_1.20051.93.0_x64__8wekyb3d8bbwe\YourPhone.exeFaulting module path: C:\Program Files\WindowsApps\Microsoft.YourPhone_1.20051.93.0_x64__8wekyb3d8bbwe\YourPhone.Views.dllReport Id: eda0f22a-e277-40e9-9df1-ed8cf7e651caFaulting package full name: Microsoft.YourPhone_1.20051.93.0_x64__8wekyb3d8bbweFaulting package-relative application ID


Windows version build 18362

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Reboot seems to have fixed it.