diff -up ./src/coolkey/slot.cpp.max-cpu-bug ./src/coolkey/slot.cpp

--- ./src/coolkey/slot.cpp.max-cpu-bug	2016-06-30 14:36:10.502785885 -0700

+++ ./src/coolkey/slot.cpp	2016-06-30 14:36:15.812876256 -0700

@@ -1875,6 +1875,8 @@ SlotList::waitForSlotEvent(CK_FLAGS flag

 	if (status != CKYSUCCESS) {

 	    if ((CKYCardContext_GetLastError(context) ==

 						 SCARD_E_READER_UNAVAILABLE) ||

+	       (CKYCardContext_GetLastError(context) ==

+						 SCARD_E_UNKNOWN_READER) ||

 	       (CKYCardContext_GetLastError(context) == SCARD_E_TIMEOUT)) {

 		OSSleep(timeout*PKCS11_CARD_ERROR_LATENCY);

 	    }