Unfortunately, i think you'll have to go with the factory reset.

 

Not sure if there's a reason for clearing the cache that way.
But why not just use an app to clear the cache?
I like Quick app clean cache

 

I have this issue too..... Its EVERY widget from 1.5. Clock/weather, text messages, HTC Peep, Large Calender, etc. And Im also having the facebook issues, but thats not really a priority for me. And on another note, my Last.fm widget doesnt let me log in. Does anyone know if this is a 2.1 issue?

I just recently got my phone, so a factory reset wont be an utterly horrific process. But I just want to double check. If I factory reset, it will go back to 1.5? And if thats the case, I can re-install 2.1? And if so, there would be a chance that my widgets would be where they should be again? I miss those widgets so much....

 

No, a factory reset will not take you back to 1.5.

 

Oh! Even better. So does it seem like a factory reset could be a possible solution fixing the MIA Widget issue?

 

I thought I read somewhere that you can clear a cache somewhere and this issue would be fixed? I can't find the answer, and I'm currently having this issue with my sister's phone... just did OTA update, and all HTC widgets are gone...

Or maybe it was like a uncheck/recheck a sync somewhere? Ugh I don't remember what thread it was in...

 

Minime - the factory reset will fix the MIA widget issue - it fixed mine. In my case I did 2 factory resets, because right after the first one seemed to work I noticed the Market would force close - the second one did the trick.

 

I just took the plunge and factory resetted! I have my widgets back, but when it came to calling up verizon and reprogramming the phone, i had some issues! It took a couple tries but finally i just got it to reprogram! Thanks for your help everyone! Ill let you know if i run into any problems! (and ill be sure to check if my market force closes on me! )