From greggallman.com

Aug 8, 2011
GREGG ALLMAN CANCELS SOME LATE SUMMER TOUR DATES

Upon his doctor's orders, Gregg Allman is unfortunately being forced to cancel his August 26 through September 15 concert dates. Some of these dates will be rescheduled for later in the year. Allman had to cancel four dates at the end of his four week European tour in June due to an upper respiratory condition. His doctor hoped that with rest, he'd get better, but unfortunately the issue has persisted. Treatment is going to involve several days of hospitalization and 4 - 6 weeks of bed rest at home. Allman continues to recover from his successful liver transplant and expects to return to touring in support of his highly acclaimed "Low Country Blues" album in the late fall.

This news truly SUCKS! Not only for the fact that the venue, Boarding House Park, is a wonderful place to see/hear music, but that the entire show was going to be broadcast on 300 NPR radio stations.