For those that may not be on the mailing list, a new version (V2.6.4) is now available for download.
"FlexRadio Systems is pleased to announce the general availability of the newest release of PowerSDR, version 2.6.4 intended for use with the FLEX-1500, FLEX-3000 and FLEX-5000 software defined radios. PowerSDR v2.6.4 has several new significant features, existing feature enhancements and bug fixes."
Go to their home page:
http://www.flex-radio.com/