This is my first time trying to integrate Simperium in one of my iOS core data projects. Though the initial sync works great. I'm seeing a ton of crashes at later stages with the following log.
2013-03-26 18:40:08.460 APP[2468:ae03] *** Assertion failure in -[SPMemberDate diff:otherValue:], /path/to/simperium-ios-develop/Simperium/SPMemberDate.m:48
2013-03-26 18:40:08.465 APP[2468:ae03] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Simperium error: couldn't diff dates because their classes weren't NSDate'
Printing the results of [thisValue class] & [otherValue class] in the method that occupies line 48 of SPMemberDate.m shows that at one point, thisValue is an __NSDate object, while otherValue is __NSCFNumber object.
The values of the culprit objects are always the following :-
1970-01-01 00:00:00 +0000 for thisValue
and
0 for otherValue
I'm at loss for where to look next to try & debug this issue. What could be returning an NSNumber instead of an NSDate? And, what could be returning a date from the 70s? I'm fairly ceratin, it's nothing in my code. Any help would be nice.
Are you only syncing between iOS devices, or are you also syncing to a web app or backend service? Date values are currently transmitted as numbers on the wire (number of seconds since 1970), so if you're sending dates to Simperium from a non-iOS device, you'll need to use that format.
The Simperium iOS library should be handling conversion to/from NSDate on iOS though. It's open source, so you can try downloading it and digging in a bit further to see what might be going wrong: https://github.com/Simperium/simperium-ios