title: how to resolve the "Sass::SyntaxError: Invalid CSS" error in Liferay 6.2?
body: <p>I am using Eclipse Kepler-4.3 and Liferay 6.2 CE GA5.</p>
  
  <p>I tried to deploy a theme but I got this error:</p>
  
  <blockquote>
  <pre><code> [echo] Loading jar:file:/D:/FormationJEE/Liferay/LiferayGA5/tomcat/liferay-portal-6.2-ce-ga5/tomcat-7.0.62/webapps/ROOT/WEB-INF/lib/portal-impl.jar!/system.properties
   [echo] Loading jar:file:/D:/FormationJEE/Liferay/LiferayGA5/tomcat/liferay-portal-6.2-ce-ga5/tomcat-7.0.62/webapps/ROOT/WEB-INF/lib/portal-impl.jar!/portal.properties
   [echo] Sass::SyntaxError: Invalid CSS after "...ow-x: hidden\0/": expected expression (e.g. 1px, bold), was ";"
   [echo]                 expected at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/scss/parser.rb:1147
   [echo]                expected! at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/script/lexer.rb:199
   [echo]              assert_expr at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/script/parser.rb:471
   [echo]         times_div_or_mod at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/script/parser.rb:233
   [echo]            plus_or_minus at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/script/parser.rb:225
   [echo]               relational at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/script/parser.rb:225
   [echo]                eq_or_neq at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/script/parser.rb:225
   [echo]                 and_expr at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/script/parser.rb:225
   [echo]                  or_expr at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/script/parser.rb:225
   [echo]                    space at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/script/parser.rb:298
   [echo]                     expr at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/script/parser.rb:246
   [echo]                     send at org/jruby/RubyKernel.java:2093
   [echo]              assert_expr at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/script/parser.rb:470
   [echo]                    parse at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/script/parser.rb:49
   [echo]                     send at org/jruby/RubyKernel.java:2093
   [echo]              sass_script at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/scss/parser.rb:1021
   [echo]                   value! at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/scss/parser.rb:881
   [echo]              declaration at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/scss/parser.rb:858
   [echo]   declaration_or_ruleset at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/scss/parser.rb:581
   [echo]                     call at org/jruby/RubyProc.java:270
   [echo]                     call at org/jruby/RubyProc.java:220
   [echo]                  rethrow at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/scss/parser.rb:1122
   [echo]   declaration_or_ruleset at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/scss/parser.rb:591
   [echo]              block_child at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/scss/parser.rb:553
   [echo]           block_contents at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/scss/parser.rb:542
   [echo]                    block at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/scss/parser.rb:534
   [echo]                  ruleset at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/scss/parser.rb:528
   [echo]              block_child at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/scss/parser.rb:552
   [echo]           block_contents at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/scss/parser.rb:545
   [echo]               stylesheet at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/scss/parser.rb:82
   [echo]                    parse at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/scss/parser.rb:27
   [echo]                 _to_tree at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/engine.rb:342
   [echo]                  _render at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/engine.rb:315
   [echo]                   render at C:/Users/MARWEN~1/AppData/Local/Temp/liferay/ruby/gems/sass-3.2.12/lib/sass/../sass/engine.rb:262
   [echo]                   (root) at &lt;script&gt;:48
   [echo] Unable to parse /css/app.css
   [echo] Exception in thread "main" org.jruby.embed.EvalFailedException: (SyntaxError) Invalid CSS after
  </code></pre>
    
    <p>"...ow-x: hidden\0/": expected expression (e.g. 1px, bold), was ";"
         [echo]   at org.jruby.embed.internal.EmbedEvalUnitImpl.run(EmbedEvalUnitImpl.java:127)
         [echo]   at org.jruby.embed.ScriptingContainer.runUnit(ScriptingContainer.java:1231)
         [echo]   at org.jruby.embed.ScriptingContainer.runScriptlet(ScriptingContainer.java:1224)
         [echo]   at com.liferay.portal.scripting.ruby.RubyExecutor.doEval(RubyExecutor.java:189)
         [echo]   at com.liferay.portal.scripting.ruby.RubyExecutor.eval(RubyExecutor.java:229)
         [echo]   at com.liferay.portal.scripting.ruby.RubyExecutor.eval(RubyExecutor.java:129)
         [echo]   at com.liferay.portal.tools.SassToCssBuilder._parseSassFile(SassToCssBuilder.java:355)
         [echo]   at com.liferay.portal.tools.SassToCssBuilder._cacheSass(SassToCssBuilder.java:186)
         [echo]   at com.liferay.portal.tools.SassToCssBuilder._parseSassDirectory(SassToCssBuilder.java:317)
         [echo]   at com.liferay.portal.tools.SassToCssBuilder.(SassToCssBuilder.java:172)
         [echo]   at com.liferay.portal.tools.SassToCssBuilder.main(SassToCssBuilder.java:125)
         [echo] Caused by: org.jruby.exceptions.RaiseException: (SyntaxError) Invalid CSS after "...ow-x: hidden\0/": expected
    expression (e.g. 1px, bold), was ";"</p>
    
    <p>BUILD FAILED
    D:\FormationJEE\Liferay\LiferayGA5\sdk\liferay-plugins-sdk-6.2\build-common.xml:3162:
    The following error occurred while executing this line: : The
    following error occurred while executing this line:
    D:\FormationJEE\Liferay\LiferayGA5\sdk\liferay-plugins-sdk-6.2\build-common.xml:1421:
    The following error occurred while executing this line: : The
    following error occurred while executing this line:
    D:\FormationJEE\Liferay\LiferayGA5\sdk\liferay-plugins-sdk-6.2\build-common.xml:2866:
    The following error occurred while executing this line:
    D:\FormationJEE\Liferay\LiferayGA5\sdk\liferay-plugins-sdk-6.2\build-common.xml:190:
    Sass to CSS Builder generated exceptions.</p>
  </blockquote>