Can't send transactions because it shows an error: "Your client produced a transaction that is not accepted by the network any more. Please upgrade to Electrum 2.5.1 or newer".
But I can't find Electrum-DASH 2.5.1 version...
Need urgen help guys
Unfortunately, I believe this board is only for the official Bitcoin version of Electrum.
It does seem that Electrum-Dash latest version is 2.4.1 so this error message is prob actually due to reused code from the original Electrum. I'd recommend that you contact the authors of Electrum-Dash and possibly open up a bug report on their github in order to further investigate your issue.