January 9th, 2018 Many thanks to Nico who has resolved the problems with 64-bit systems where the Perseus could not be started on some USB hardware.
Until a new kit is made available two DLLs must be replaced in the installation folder. The DLLs are at https://sdr-radio.groups.io/g/main/files/Perseus/Perseus%2064-bit%20DLLs.zip (the files area of the user group).
Thanks also to Leif (LINRAD) for his help.
August 2016: Users are reporting that the 2016a1 update is working well.
The update for 32-bit and 64-bit systems is here: http://microtelecom.it/perseus/PerseusDriversUpdate2016a1.zip
Drivers for Windows XP through to Windows 10 are here: http://microtelecom.it/perseus/software.html
Note: the Perseus Control dll on http://microtelecom.it/perseus/software.html is only for 32-bit systems, if you are using a 64-bit operating system do NOT copy this file into the SDR-Radio.com program folder.