NSServiceCache caches old data when writing a service in a Cocoa app

Hi!

I have created a service on a cocoa application, though this is my first cocoa app, I do have experience with iOS.

After testing it I was let known that this application does not work when selecting text from Apple Mail.

It will give an error: Report bug to Mantis (nl.uncinc.Mantis-bugreporter) is disqualified because its send and/or return types cannot be handled by the requestor (null).

Output of /System/Library/CoreServices/pbs -dump_pboard is the following:

{
        NSBundleIdentifier = "nl.uncinc.Mantis-bugreporter";
        NSBundlePath = "/Users/techwolf12/Library/Developer/Xcode/DerivedData/Mantis_bugreporter-csymyhiyhrzpkoaahasfxwenzzoa/Build/Products/Debug/Mantis bugreporter.app";
        NSKeyEquivalent =         {
            default = B;
        };
        NSMenuItem =         {
            default = "Report bug to Mantis";
        };
        NSMessage = menuReportBug;
        NSPortName = "Mantis bugreporter";
        NSRequiredContext =         {
        };
        NSRestricted = 0;
        NSReturnTypes =         (
              NSStringPboardType
        );
        NSSendTypes =         (
            NSStringPboardType,
            NSRTFPboardType,
            "public.plain-text"
        );

I think the issue is with the fact I had a return type in the past. However, /System/Library/CoreServices/pbs -flush, clean builds etc. do not work.

I also tried rm -rf /Users/techwolf12/Library/Developer/Xcode/DerivedData/* and a reboot of my machine already.

The part of my Info.plist is like this:

<key>NSServices</key>
    <array>
        <dict>
            <key>NSMessage</key>
            <string>menuReportBug</string>
            <key>NSKeyEquivalent</key>
            <dict>
                <key>default</key>
                <string>B</string>
            </dict>
            <key>NSMenuItem</key>
            <dict>
                <key>default</key>
                <string>Report bug to Mantis</string>
            </dict>
            <key>NSPortName</key>
            <string>Mantis bugreporter</string>
            <key>NSRequiredContext</key>
            <dict/>
            <key>NSRestricted</key>
            <false/>
            <key>NSSendTypes</key>
            <array>
                <string>NSURLPboardType</string>
                <string>NSFilenamesPboardType</string>
                <string>NSStringPboardType</string>
                <string>NSRTFPboardType</string>
                <string>NSRTFDPboardType</string>
            </array>
            <key>NSReturnTypes</key>
            <array/>
            <key>NSTimeout</key>
            <string>600000</string>
        </dict>
    </array>

And in my AppDelegate.m

- (void)applicationDidFinishLaunching:(NSNotification*)aNotification {
  ServiceHandler* handler;
  handler = [[ServiceHandler alloc] init];
  [NSApp setServicesProvider:handler];
  NSUpdateDynamicServices();
}

If someone would be able to help me, it will be very much appreciated!

Thanks!