How do I solve this? "Error getting License. License Server Communication Problem: E_ACT_NOT_READY"

I've already verified my email account, and cannot add any eBooks with the .ascm ext. from Overdrive to read.  I am using a MacBook Pro (work laptop), how do I fix this?  The programs are approved for use by the technology department, so this is an odd blip.

I should add that Overdrive recommended the Adobe Digital Editions as a way to download and read their eBooks. 

Thanks in advance!