[HTC 10 ROMs, Kernels, Recoveries, & Other Developm] nkk71:
Backing up System...
Error opening: '/system/app/CalendarGoogle' (Not a directory)
I:Error in Generate_TarList!

can you open an adb shell, and "ls" them, here are mine:

root@htc_pmeuhl:/ # [B][COLOR="Blue"]ls -laZ /system/app/[/COLOR][/B]
ls -laZ /system/app/
drwxr-xr-x root root u:object_r:system_file:s0 AdAway
drwxr-xr-x root root u:object_r:system_file:s0 AndroidPay
drwxr-xr-x root root u:object_r:system_file:s0 AntHalService
drwxr-xr-x root root u:object_r:system_file:s0 BasicDreams
drwxr-xr-x root root u:object_r:system_file:s0 Bluetooth
drwxr-xr-x root root u:object_r:system_file:s0 BluetoothMidiService
drwxr-xr-x root root u:object_r:system_file:s0 CalendarGoogle
drwxr-xr-x root root u:object_r:system_file:s0 CaptivePortalLogin
drwxr-xr-x root root u:object_r:system_file:s0 CertInstaller
drwxr-xr-x root root u:object_r:system_file:s0 Chrome
drwxr-xr-x root root u:object_r:system_file:s0 DocumentsUI
drwxr-xr-x root root u:object_r:system_file:s0 DownloadProviderUi
drwxr-xr-x root root u:object_r:system_file:s0 Drive
drwxr-xr-x root root u:object_r:system_file:s0 DriveActivator
drwxr-xr-x root root u:object_r:system_file:s0 Ds
drwxr-xr-x root root u:object_r:system_file:s0 EditorsDocs
drwxr-xr-x root root u:object_r:system_file:s0 ExactCalculator
drwxr-xr-x root root u:object_r:system_file:s0 Exchange3Google
drwxr-xr-x root root u:object_r:system_file:s0 FaceLock
drwxr-xr-x root root u:object_r:system_file:s0 Flashlight
drwxr-xr-x root root u:object_r:system_file:s0 Gmail2
drwxr-xr-x root root u:object_r:system_file:s0 GoogleContactsSyncAdapter
drwxr-xr-x root root u:object_r:system_file:s0 GoogleTTS
drwxr-xr-x root root u:object_r:system_file:s0 HTCSetupWizard
drwxr-xr-x root root u:object_r:system_file:s0 HTC_Connect
drwxr-xr-x root root u:object_r:system_file:s0 HTMLViewer
drwxr-xr-x root root u:object_r:system_file:s0 Hangouts
drwxr-xr-x root root u:object_r:system_file:s0 HoloSpiralWallpaper
drwxr-xr-x root root u:object_r:system_file:s0 HtcCompressViewer
drwxr-xr-x root root u:object_r:system_file:s0 HtcMessageProvider
drwxr-xr-x root root u:object_r:system_file:s0 HtcPowerStripWidget
drwxr-xr-x root root u:object_r:system_file:s0 HtcResetNotify
drwxr-xr-x root root u:object_r:system_file:s0 KeyChain
drwxr-xr-x root root u:object_r:system_file:s0 LiveWallpapers
drwxr-xr-x root root u:object_r:system_file:s0 Maps
drwxr-xr-x root root u:object_r:system_file:s0 Music2
drwxr-xr-x root root u:object_r:system_file:s0 MyHTC
drwxr-xr-x root root u:object_r:system_file:s0 News_Republic
drwxr-xr-x root root u:object_r:system_file:s0 NfcNciNxp
drwxr-xr-x root root u:object_r:system_file:s0 NoiseField
drwxr-xr-x root root u:object_r:system_file:s0 PacProcessor
drwxr-xr-x root root u:object_r:system_file:s0 PartnerBookmarksProvider
drwxr-xr-x root root u:object_r:system_file:s0 PhaseBeam
drwxr-xr-x root root u:object_r:system_file:s0 PlayAutoInstallConfig-stub
drwxr-xr-x root root u:object_r:system_file:s0 Power_CAOffload
drwxr-xr-x root root u:object_r:system_file:s0 PrintSpooler
drwxr-xr-x root root u:object_r:system_file:s0 RCSBootstraputil
drwxr-xr-x root root u:object_r:system_file:s0 RcsImsBootstraputil
drwxr-xr-x root root u:object_r:system_file:s0 RootPA
drwxr-xr-x root root u:object_r:system_file:s0 SmartcardService
drwxr-xr-x root root u:object_r:system_file:s0 TimeService
drwxr-xr-x root root u:object_r:system_file:s0 Titanium_Backup
drwxr-xr-x root root u:object_r:system_file:s0 TouchPal_HandwritePack
drwxr-xr-x root root u:object_r:system_file:s0 TouchPal_Skin_DefaultWhite
drwxr-xr-x root root u:object_r:system_file:s0 UIBC
drwxr-xr-x root root u:object_r:system_file:s0 UserDictionaryProvider
drwxr-xr-x root root u:object_r:system_file:s0 VenomAppInstaller
drwxr-xr-x root root u:object_r:system_file:s0 VenomBattery
drwxr-xr-x root root u:object_r:system_file:s0 VenomNavbars
drwxr-xr-x root root u:object_r:system_file:s0 VenomUnderlays
drwxr-xr-x root root u:object_r:system_file:s0 Videos
drwxr-xr-x root root u:object_r:system_file:s0 WebViewGoogle
drwxr-xr-x root root u:object_r:system_file:s0 YouTube
drwxr-xr-x root root u:object_r:system_file:s0 appmanager
drwxr-xr-x root root u:object_r:system_file:s0 facebook-stub
drwxr-xr-x root root u:object_r:system_file:s0 instagram-stub
drwxr-xr-x root root u:object_r:system_file:s0 mcRegistry
drwxr-xr-x root root u:object_r:system_file:s0 messenger-stub
drwxr-xr-x root root u:object_r:system_file:s0 talkback

root@htc_pmeuhl:/ # [B][COLOR="Blue"]ls -laRZ /system/app/CalendarGoogle[/COLOR][/B]
ls -laRZ /system/app/CalendarGoogle

/system/app/CalendarGoogle:
-rw-r--r-- root root u:object_r:system_file:s0 CalendarGoogle.apk

EDIT: could probably need a fs repair