I downloaded the 3.0.6 version. That version does NOT function on my laptop w/OS Vista. Nor does it work on my HP laptop w/OS Windows 8.1
Question: What OS will support the new Electrum Wallet version 3.0.6 ?
I have successfully installed 3.0.6 on two old systems running Windows 7.
I suggest you read some of the threads in the Electrum subforum here for solutions to getting it running on old OSes.