Fails on counters style sheet

[radiocity]

Style:

li:before{
    content: counters(item, ".") + "."; /* browsers work perfectly but csso*/
    counter-increment: item;
}

Error log:

D:\...\csso\lib\parser\index.js:115
    throw new Error('Please check the validity of the CSS block starting from th
e line #' + currentBlockLN);
    ^

Error: Please check the validity of the CSS block starting from the line #485
    at throwError (D:\...\csso\lib\parser\index.js:115:11)
    at getBlock (D:\...\csso\lib\parser\index.js:523:14)
    at getRuleset (D:\...\csso\lib\parser\index.js:1595:18)
    at getStylesheet (D:\...\csso\lib\parser\index.js:1797:52)
    at Object.CSSPRules.stylesheet (D:\...\csso\lib\parser\index.js:80:65)
    at parse (D:\...\csso\lib\parser\index.js:2108:30)
    at Object.minify (D:\...\csso\lib\index.js:33:15)
    at Transform.stream._transform (D:\...\gulp-csso\index.js:23:34)
    at Transform._read (_stream_transform.js:166:10)
    at Transform._write (_stream_transform.js:154:12)

Honestly, I use csso as a part of gulp-csso wrapper

[lahmatiy]

Development version has no error in your case, since parser was reworked. It will be available soon.
However, looks like plus between counters(item, ".") and "." is incorrect
https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Lists_and_Counters/Using_CSS_counters

[radiocity]

Sorry, my mistake