UIWebView displays locally stored document on simulator but not device - iphone

Question

I have an issue where I'm trying to view a document (Word document, image, or video) that I have stored locally. I'm using UIWebView and on the Simulator it works perfectly, but on the device, it's a blank screen (no errors thrown in console). Here's my code to view the document:
UIWebView *newWebView;
if (appDelegate.IS_IPAD)
{
newWebView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 768, 1024)];
}
else
{
newWebView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];
}
newWebView.scalesPageToFit = YES;
[self setWebView: newWebView];
[newWebView release], newWebView = nil;
[[self webView] setDelegate: self];
[[self view] addSubview:[self webView]];
NSURL *nsURL = [NSURL fileURLWithPath:filePath isDirectory:NO];
[[self webView] loadRequest:[NSURLRequest requestWithURL:nsURL]];
Here's how I'm saving the document locally before viewing. I do think the file is getting successfully saved on the device as it does on the simulator.
// Save the file on the device
NSURL *contentUrl = [NSURL URLWithString:selectedContent.contentUrl];
NSString *fileName = [[contentUrl absoluteString] lastPathComponent];
NSString *homeDirectoryPath = NSHomeDirectory(); // Create the path
NSString *unexpandedPath = [homeDirectoryPath stringByAppendingString:#"/MyApp/"];
NSString *folderPath = [NSString pathWithComponents:[NSArray arrayWithObjects:[NSString stringWithString:[unexpandedPath stringByExpandingTildeInPath]], nil]];
NSString *unexpandedImagePath = [folderPath stringByAppendingFormat:#"/%#", fileName];
NSString *filePath = [NSString pathWithComponents:[NSArray arrayWithObjects:[NSString stringWithString:[unexpandedImagePath stringByExpandingTildeInPath]], nil]];
if (![[NSFileManager defaultManager] fileExistsAtPath:folderPath isDirectory:NULL])
{
[[NSFileManager defaultManager] createDirectoryAtPath:nil withIntermediateDirectories:NO attributes:nil error:nil];
}
// Do the actual write of the file to the device
NSData *fileData = [NSData dataWithContentsOfURL:myUrl]; // Create the file data reference
[fileData writeToFile:filePath atomically:YES]; //Save the document to the home directory

Answer 1

Watch out for case issues. The simulator is not case sensitive whereas the iPhone is!

Answer 2

I solved this by saving my document to the default Documents Directory. Here's the code I used to accomplish this:
NSArray *arrayPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docDirectory = [arrayPaths objectAtIndex:0];
NSString *filePath = [docDirectory stringByAppendingString:#"/"];
filePath = [filePath stringByAppendingString:fileName];
NSData *fileData = [NSData dataWithContentsOfURL:myUrl];
[fileData writeToFile:filePath atomically:YES];