Visual Studio 2013 and NullReferenceException while trying to run any extensions with SASS -

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some time ago inherited angular app style sheets made in scss. after research found out cannot compile them in visual studio out-of-the-box , require extensions. first tried out web essentials, first thing come out on stack overflow - turned out crash visual. short googling after learned crashing frequent, , web essentials can not compile sass files anymore anyway, checked out others.

however, after trying out other solutions - sassystudio, compilesass , mindscape web workbench - saw problem caused crashes in webessentials related installation of visual. tried clearing caches of extensions, uninstalling extensions , reinstalling them back, didn't @ all.

the extensions seem crash on opening file, because when opening visual no scss files open no exceptions thrown. check if related specific file, or referenced in it, created empty .scss file, not compile.

after checking activitylog.xml saw 2 errors in it: 

<entry>    <record>506</record>    <time>2015/07/22 12:52:42.951</time>    <type>error</type>    <source>editor or editor extension</source>    <description>system.nullreferenceexception: object reference not set instance of object.&#x000d;&#x000a;   @ mindscape.visualsass.integration.ui.versioninfoadornmentfactory.textviewcreated(iwpftextview textview)&#x000d;&#x000a;   @ microsoft.visualstudio.text.editor.implementation.wpftextview.&lt;&gt;c__displayclassc.&lt;bindcontenttypespecificassets&gt;b__9()&#x000d;&#x000a;   @ microsoft.visualstudio.text.utilities.guardedoperations.callextensionpoint(object errorsource, action call)    </description> </entry>

and other one:

<entry>     <record>507</record>     <time>2015/07/22 12:52:43.113</time>     <type>error</type>     <source>color theme service</source>     <description>the color &apos;popup&apos; in category &apos;de7b1121-99a4-4708-aedf-15f40c9b332f&apos; not exist.</description> </entry>

the first 1 thrown in webessentials , compilesass. i'm running visual studio 2013 premium update 4 on windows 8.1 professional. scss files ok, compile in scout , internet compilers. none of installed plugins had started, of them supposed add context menus, , none had shown.

no idea now. help?

edit: of problems, related nuget caused installation of cordova tools. after deinstalling, problems context menus solved. problems sass tools still there.

edit2: upgrading upgrade 5 did not solve problem, hovewer, second error color theme service had disappered somewhere on way. not sure when or however.


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