Quote from: TryNinja on March 20, 2018, 05:23:35 PM

I don't think so. Have you tried to open the standalone version or install it normally to check?

P.s: It's not recommended to use the portable version of Electrum. Source;

Actually what ThomasV is saying is that users may tend to get portable Electrum onto infected computers and that will be a problem.

Quote from: ThomasV on March 18, 2013, 09:43:45 AM

Don't get me wrong: I am not saying that a portable build is by itself more dangerous than a non-portable version.

Now about the original question:
I made a test for you and I reproduced the problem. And I have a fix too. From electrum_data move away all the folders except wallets. Electrum portable 3.1.1 will start. You will have to select your wallet again.