v2.11.3 O->G for series instance moved into synced date window - Object Reference Error

[DamianSuess]

Checklist:-

• Upgrade to the latest release (alpha if available)
• Reproduce the issue
• Complete the information below
• Provide your OGcalsync.log file (see how-to)

OGCS Version: v2.11.3.0
Edition: Installed
Sync Direction: O->G
Outlook Version: Microsoft® Outlook® for Microsoft 365 MSO (Version 2408 Build 16.0.17928.20336) 64-bit

Bug Description
After updating to v2.11.3.0, syncing from Outlook to Google is failing with an object reference exception. Prior to upgrading, v2.11.2.0 was working.

Steps to Reproduce the Issue

1. Upgraded
2. Error message pops every time after syncing.

OGcalsync - v2.11.3.0 - Object Reference Error After Update.log

Any other information
Any additional information that may help troubleshoot the issue.
📎 Attach your OGcalsync.log file.

Question

How do I go about reverting back to the previous version?

It's been a while since i've used Squirrel updater in my own programs. Do I just uninstall the latest package folder? Or, do i have to delete the folder & manually unpackage the root OutlookGoogleCalendarSync.exe from the .nukpg file..

I love this app for syncing, literally depending on it for work needs. Thank you @phw198 in advance

Error message:

5c018e6#diff-b455ce7ec6e21297ba163148fd7bb877f06eefe5a68075c3b6d330192eb821e3R176

2025-02-24 09:17:25,451 ERROR 21 OutlookGoogleCalendarSync.Console [419] -  <Console\Console.cs:403> Unable to update existing entries in the Google calendar.
2025-02-24 09:17:25,459 ERROR 21 OutlookGoogleCalendarSync.Console [419] -  Object reference not set to an instance of an object.
2025-02-24 09:17:26,184 ERROR 21 OutlookGoogleCalendarSync.Exception [29] -  System.NullReferenceException: Object reference not set to an instance of an object.
2025-02-24 09:17:26,185 ERROR 21 OutlookGoogleCalendarSync.Exception [22] -  Code: 0x80004003,-2147467261; Location: GetCalendarEntriesInRecurrence() in GetCalendarEntriesInRecurrence() at offset 80 in GoogleCalendar.cs:176:13
2025-02-24 09:17:26,186 ERROR 21 OutlookGoogleCalendarSync.Exception [66] -     at OutlookGoogleCalendarSync.Google.Calendar.GetCalendarEntriesInRecurrence(String recurringEventId, Boolean filterToSyncDates) in C:\Users\Paul\Git\OutlookGoogleCalendarSync\src\OutlookGoogleCalendarSync\Google\GoogleCalendar.cs:line 176
   at OutlookGoogleCalendarSync.Google.Recurrence.getGoogleInstance(Exception oExcp, String gRecurringEventID, Boolean dirtyCache) in C:\Users\Paul\Git\OutlookGoogleCalendarSync\src\OutlookGoogleCalendarSync\Google\GoogleRecurrence.cs:line 340
   at OutlookGoogleCalendarSync.Google.Recurrence.UpdateGoogleExceptions(AppointmentItem ai, Event ev, Boolean dirtyCache) in C:\Users\Paul\Git\OutlookGoogleCalendarSync\src\OutlookGoogleCalendarSync\Google\GoogleRecurrence.cs:line 566
   at OutlookGoogleCalendarSync.Google.Calendar.UpdateCalendarEntries(Dictionary`2 entriesToBeCompared, Int32& entriesUpdated) in C:\Users\Paul\Git\OutlookGoogleCalendarSync\src\OutlookGoogleCalendarSync\Google\GoogleCalendar.cs:line 819
   at OutlookGoogleCalendarSync.Sync.Engine.Calendar.outlookToGoogle(List`1 outlookEntries, List`1 googleEntries, String& bubbleText) in C:\Users\Paul\Git\OutlookGoogleCalendarSync\src\OutlookGoogleCalendarSync\Sync\Calendar.cs:line 666
   at OutlookGoogleCalendarSync.Sync.Engine.Calendar.synchronize() in C:\Users\Paul\Git\OutlookGoogleCalendarSync\src\OutlookGoogleCalendarSync\Sync\Calendar.cs:line 486
   at OutlookGoogleCalendarSync.Sync.Engine.Calendar.<>c__DisplayClass11_1.<StartSync>b__0(Object o, DoWorkEventArgs args) in C:\Users\Paul\Git\OutlookGoogleCalendarSync\src\OutlookGoogleCalendarSync\Sync\Calendar.cs:line 137

[phw198]

📦 Hopefully you won't need to downgrade if this hotfix v2.11.3.1.zip resolves it (see instructions for applying).
      CRCs: Zip = EA196FB6 Exe = AF46036B

Let me know how it goes!

Note for reference: this issue affects O->G where Google has no series occurrence within the synced date range, but in Outlook an occurrence has been moved into that date range.

[DamianSuess]

Oh wow, Paul, you are amazingly fast! I did a backup just in case. I'll give it a shot in the AM & let you know how it turns out.

Thank you very much! I know how tiring managing a project can be on here (i do a few as well). I really appreciate your lightening response.

Talk to you soon 👍

[cammaris]

Hi, I can confirm the hotfix works for me.