Previous 1 2 Next 17 Replies Latest reply: Jun 9, 2010 2:34 PM by ttime1
johnnie124 Level 1 Level 1 (0 points)
Ever since the 9.1 update I have received the error stating "iTunes was unable to load dataclass information from sync services" and have not been able to sync my iPhone to my laptop PC. I have tried the following with no success:

1. Reinstall iTunes
2. Per a suggestion on the forum I ran MobileMe to look for an error when that started up, but it started no problem.
3. Look for duplicate .dll files on my pc, but none were found
4. Checked http://support.apple.com/kb/TS2690 , but none of these apply.

I can sync the phone up to another PC. Does anyone have any suggestions? Below is the diagnosis I ran. Thanks for any help you can give.

Microsoft Windows XP Professional Service Pack 2 (Build 2600)
Dell Inc. Latitude D620
iTunes 9.1.0.79
QuickTime 7.6.6
FairPlay 1.7.16
Apple Application Support 1.2.1
iPod Updater Library 9.0d11
CD Driver 2.2.0.1
CD Driver DLL 2.1.1.1
Apple Mobile Device 3.0.0.102
Apple Mobile Device Driver 1.46.0.0
Bonjour 2.0.0.34 (214.3)


Current user is an administrator.
The current local date and time is 2010-04-13 10:11:48.
iTunes is not running in safe mode.

Video Display Information

Mobile Intel(R) 945GM Express Chipset Family
Mobile Intel(R) 945GM Express Chipset Family


** External Plug-ins Information **

No external plug-ins installed.

** iPod/iPhone Connectivity Tests **

iPodService 9.1.0.79 is currently running.
iTunesHelper 9.1.0.79 is currently running.
Apple Mobile Device service 3.0.0.0 is currently running.

Universal Serial Bus Controllers:

Intel(R) 82801G (ICH7 Family) USB Universal Host Controller - 27C8. Device is working properly.
Intel(R) 82801G (ICH7 Family) USB Universal Host Controller - 27C9. Device is working properly.
Intel(R) 82801G (ICH7 Family) USB Universal Host Controller - 27CA. Device is working properly.
Intel(R) 82801G (ICH7 Family) USB Universal Host Controller - 27CB. Device is working properly.
Intel(R) 82801G (ICH7 Family) USB2 Enhanced Host Controller - 27CC. Device is working properly.

No FireWire (IEEE 1394) Host Controller found.

Most Recent Device Not Currently Connected:

iPhone 3G running firmware version 3.1.3

** iPhone/iPod Touch Sync Tests **

Sync tests completed successfully.

Dell Latitute D620, Windows XP Pro
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