stringWithContentsOfFile and initWithContentsOfFile return null after several runs

Question

I am creating an iOS app which reads in a text file and displays the contents in a UIText field.

For the 1st three consecutive runs of thee app (Restarting a new session without exiting), the data is read in fine. However on the fourth attempt, the data returned from the file is all nulls.

I've verified the file integrity. The issue exists when using stringWithContentsOfFile or initWithContentsOfFile.

After many hours of troubleshooting, I believe the issue is somehow related to a buffer being cleared within the above mentioned methods.

Any insight regarding this issue is greatly appreciated. I've tried many things with no luck.

Here's the code I use to read in the file:

TheString = [NSString stringWithContentsOfFile:[[NSBundle mainBundle]     
pathForResource:@"My_TextFile" ofType:@"txt"] encoding:NSUTF8StringEncoding error:NULL];

Here's the code I use to display certain contents of the file (The contents are placed in an array of type NSArray):

NSArray *My_Array;

My_Array= [TheString componentsSeparatedByString:@"\n"];

/* Obtain specific data to display */
    DisplayedData = [My_Array objectAtIndex:M[l]-1];
:
:
/* Display the data in the view */
    MyUITextView.text = DisplayedData;

/* Log the data */
    NSLog(@"%@", MyUITextView.text);

On the 4th invocation of the code above, the data returned is blank and NSLOG is returning nulls

Thanks so much for any help!