Your wallet file has for some reason become corrupted.
First (
very important), make a backup of it so there's no chance of making things worse.
Next, open your wallet file in a text editor (such as Notepad on Windows).
It should look something like this:
{
"accounts": {
"0": {
"change": [
"0226e2a67847df6a7f46efe9da8b9f6fc7f7d8023f63eef8d636b38203bc56a2d3",
"0389e77e92ca2ab3d721630d2eeef7efc1556fec72dcf0f52b74bf5286a5c4fe94",
"03a31d53b340f76a006984638e5260365cf25f8a49beae1dd29e2606d48f3b498c"
],
"receiving": [
"039bb38c166e55c595891b78325da2025d013ecd5d9694b05e210b48a01168065c",
"0351940ad5247586c6dbfbaeadd38dec431cf97ca7af71fa0552e4c77482dfa640",
"03b75f7d34f2130983e10127d66377eb1f2b1278db96da33dd390779573b405f87",
"03db37551e0dfa2a4c499cd8f64ff3d1f8375fdb7bb8a14af73c6afa7f7a6152b2",
"037777a308fa5bb9bb12bd5de31b6a5d21eb0d94067002236a58dd1787504f1bed",
"02f86a3fd6a2ea654c1ebc65ce01b13c9a700bf77bcd1742b865e223574047f87a",
"03eeb6bd840b2d309254df79cd4554bec50634a897c6f4ff81fbcd87d4f336c8b5",
"02a95c72dd2c5e8a7ef70c764e1a51c0f8910abb23201be0a01c47b091d1fb1bf3",
"03393270a21090a27c84cab77bb94eaf9ef7e1194ccab43e47c031abdacb840aac",
"02fd90ef85469e265326a2a3994daa7d489d2c981d09155021eb58e7bf790ca474",
"03c4cc88a3243d663f92350f58a625c94319b210411d75c4ba10e02dceaedd20c7",
"02ccf9ee6a6cc63cb28e2ff6e46f3a9fe4d14f8efd139fafd3e91d657670da527f",
"0253b5a73f453976414747f1cf0ab6eadabf632d7c51f2504f725fb6fb528516d4",
"03ae45504521514c0a675150937a95775abbaee5e99d85b0e7c91231090de55b8a",
"0349aa147502380ad458648fb535381a902a05938dfbaee4c75dfe4267a28660f2",
"02e22d7e9bdde58ce16627af385df1956091a5e5d0047f356df168df96796adf2c",
"03e560201fbf19a32d7de762a49d50d0c20889a2d509d8ba2fd6a45a296c8d61f1",
"0310fac886fe32afafedb3183f97c836470bc12610c50915797fd2e729d2eb1d78",
"03c800b16bf5787662adfda8dcf0fc99c0f68936c80346c50ec033cf79f0e4ed9c",
"028ac1a7dea5856d201405cc8802fb1198b3dc50884c65c7ae4c79e4ae9da369fb"
],
"xpub": "xpub661MyMwAqRbcGsUXkGBkytQkYZ6M16bFWwTocQDdPSm6eJ1wUsxG5qty1kTCUq7EztwMscUstHVo1XCJMxWyLn4PP1asLjt4gPt3HkA81qe"
}
},
"accounts_expanded": {},
"master_private_keys": {
"x/": "9B961mYKYFV7Bg1zRYZ8ZGw4cE+2D8NF3lp6d2XPe8r87EE8qxVnv/8UA9PxSopPF41RKg9VWR4iyd/rSA6CusnLvkzU8+5Zy9Gb8Fgnu2HpYc7SXHNhiJp8maQjxMCBo8nhXqU3f855ALJGgVlaZflBN06k8XKgOENtCOLrrP0="
},
"master_public_keys": {
"x/": "xpub661MyMwAqRbcGsUXkGBkytQkYZ6M16bFWwTocQDdPSm6eJ1wUsxG5qty1kTCUq7EztwMscUstHVo1XCJMxWyLn4PP1asLjt4gPt3HkA81qe"
},
"seed": "CBjg2RyTk91VOCO9O+X0XlqUoiiBPrTqMcSIOAlJpBP2N9sSgCABTSli5ecy8vpi8JEG3Tkg6aU0wAj0hs74PadfYjpobJLGkR7bDUH5NwZT16DnKzcdsLhnsuHqK+Qp",
"seed_version": 11,
"use_encryption": true,
"wallet_type": "standard"
}
You're looking for missing syntax. For example
- make sure all of the braces ( the {s and }s ) match up and that there's a closing brace at the end
- make sure there's nothing following the last closing brace
- make sure there a comma after each pair of items, except for the last item in a list
- make sure there's a colon between each pair of items
- make sure the double-quotes match up
If you find an error, try correcting it, saving the file and loading it in Electrum. If you can't find an error, you'll need to find someone you trust who understands JSON (that's Electrum 2's file format) who can look at the file for you.
If you get it fixed, be sure to write down your seed!
Good luck....
