Error using keyed archiving on iPhone

Question

Hi
I am trying to archive an object using keyed archiving. I have managed to successfully create the archive, but attempts to load it results in the following error:
'NSInvalidArgumentException', reason: '* -[NSKeyedUnarchiver initForReadingWithData:]: incomprehensible archive (0xffffffce, 0xfffffffa, 0xffffffed, 0xfffffffe, 0x7, 0x0, 0x0, 0x0)'
The code:
path = [[NSBundle mainBundle] bundlePath];
finalPath = [path stringByAppendingPathComponent:@"DataStore"];
- (void)saveArchive {
NSMutableData *data;
NSKeyedArchiver *archiver;
BOOL result;
data = [NSMutableData data];
archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:data];
[archiver encodeObject:myDataStore forKey:@"DataStore"];
[archiver finishEncoding];
result = [data writeToFile:finalPath atomically:YES];
[archiver release];
- (void)loadArchive {
NSData *data;
NSKeyedUnarchiver *unarchiver;
data = [NSData dataWithContentsOfFile:finalPath];
unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:data];
myDataStore = [unarchiver decodeObjectForKey:@"DataStore"];
[unarchiver finishDecoding];
[unarchiver release];
Any help would be appreciated please

Answer 1

Solved. Can only write to documents or temp directory on iPhone