I don't know for sure, but what about wiping cache? Maybe clear the data for the market app. That's what I'd try first actually.

 

This has been a very common problem lately and its not specific to MikG

http://androidforums.com/evo-4g-all-things-root/536026-unable-download-error-code-101-a.html

http://androidforums.com/evo-4g-all-things-root/534575-problem-play-store-market.html

 

here we go again ... lol. You are most likely going to have to uninstall google play and reinstall the google play apk .... you can just google search it and it will come up.

 

I was having this exact problem while running MikG as well. After some research, I was able to remedy the problem by clearing the data on the Play Store app and Google Services Framework.
1. Go to menu->settings->applications->manage applications
2. Make sure you are under the "all" tab
3. Find Google Services Framework and Google Play and clear the data.
4. Stop if necessary, then reboot.

This worked for me- hope it helps.

 

Google play was such a pain in the azz today ... bet i cleared app cache and data ... and re-installed apk about 10 times .... they need to address this