Question about Outlook Express

I recently upgraded my Lenovo ThinkPad tablet 2 (Windows 8 Pro) to 8.1 through the Windows Store when it became available. I have 18.74GB on SkyDrive, which sycs flawlessly w/ my Windows 7 machine using the SkyDrive client. All of that was also syncing just fine w/ the SkyDrive client on my tablet w/ Win 8, until I upgraded to 8.1.

I set SkyDrive to "Access all files offline" from the charms bar in the SkyDrive modern app. It took a very long time but eventually it seemed like all the files had downloaded to my SkyDrive folder on the tablet.  In File Explorer on the desktop I right clicked on the SkyDrive folder in the navigation panel and selected Properties, where I could see that "Size" and "Size on disk" were equal, showing 18.7GB. So far so good.

However, some time later I noticed that in the modern SkyDrive app there was backlog of 354+ files. In the top right corner of the app, it says "Downloading 354 items". When I click on that message it opens a Progress view, where I can see a list of over 300 files, that all show Completed, but they never clear from the list. If I upload a new file to SkyDrive, it downloads instantly on the tablet, and if it even shows up (as pending) in the Progress view it disappears once it has completed.

Yesterday, when I opened Settings on the charms bar in the modern app and selected Options, "Access all files offline" was turned off, even though I never turned it off. I turned it on again, and as has happened before, in the Progress view of the SkyDrive app, I see several files (6-8) that show a status of Pending, even though they previously showed as Completed. This has happened a few times, and it's always the same six to eight files. The files in question appear to have always present on the tablet; so I don't understand why they continually reappear as Pending, or why there are 354+ files that are supposedly downloading, even when the Progress pane doesn't show any files pending, only Completed files.

I think all the files are accounted for, but I want to be sure, as I depend on offline access often for a large number of files and I can't afford to find out they're not there when I need them. When I browse my files in the SkyDrive app, it confuses me to see so many folders w/ Pending on them, even though all of the files in such folders say "Available offline". 

FYI, I have verified the following, as requested by moderators on other threads:

• Can you confirm if your computer is connected to the internet with stable connection and not on a metered network?  YES
• Can you check if the SkyDrive Sync Engine continues to run and doesn’t continue to crash?  Go to Task Manager and ensure "Sky Drive Sync Engine Host" process is running.  RUNNING
• Is there an error message on the top right corner of the screen when you launch the SkyDrive app?  NO ERRORS
• Have you tried uploading new files via web? Are they synching down to your computer?  YES

I have also ran the SkyDrive Self Help Troubleshooter w/out any noticeable results.

Thanks for any help.

CA