This issue is due to a new style property with a calc function XenForo itself adds in. Long story short, you cannot use UI.X 1.5.9.0 with any version other than 1.5.9 XenForo. Technically this has always been true, but its especially true in this latest version as it causes a huge error.Code:An exception occurred: editor_contents.css - Line 80: Invalid math expression in /home/z22se/public_html/library/XenForo/Template/Compiler.php on line 991 XenForo_Template_Compiler->getNewCompilerException() in XenForo/Template/Compiler/Function/Calc.php at line 189 XenForo_Template_Compiler_Function_Calc->_parseMathExpression() in XenForo/Template/Compiler/Function/Calc.php at line 55 XenForo_Template_Compiler_Function_Calc->compile() in XenForo/Template/Compiler.php at line 700 XenForo_Template_Compiler->compileFunction() in XenForo/Template/Compiler.php at line 576 XenForo_Template_Compiler->compileSegment() in XenForo/Template/Compiler.php at line 509 XenForo_Template_Compiler->compileSegments() in XenForo/Template/Compiler/Tag/If.php at line 112 XenForo_Template_Compiler_Tag_If->compile() in XenForo/Template/Compiler.php at line 641 XenForo_Template_Compiler->compileTag() in XenForo/Template/Compiler.php at line 570 XenForo_Template_Compiler->compileSegment() in XenForo/Template/Compiler.php at line 509 XenForo_Template_Compiler->compileSegments() in XenForo/Template/Compiler.php at line 422 XenForo_Template_Compiler->compileIntoVariable() in XenForo/Template/Compiler/Tag/Include.php at line 113 XenForo_Template_Compiler_Tag_Include->compile() in XenForo/Template/Compiler.php at line 641 XenForo_Template_Compiler->compileTag() in XenForo/Template/Compiler.php at line 570 XenForo_Template_Compiler->compileSegment() in XenForo/Template/Compiler.php at line 509 XenForo_Template_Compiler->compileSegments() in XenForo/Template/Compiler.php at line 372 XenForo_Template_Compiler->compileParsed() in XenForo/Model/Template.php at line 1601 XenForo_Model_Template->compileAndInsertParsedTemplate() in XenForo/Model/Template.php at line 1480 XenForo_Model_Template->compileTemplateInStyleTree() in XenForo/Model/Template.php at line 1329 XenForo_Model_Template->compileNamedTemplateInStyleTree() in XenForo/Model/Template.php at line 1268 XenForo_Model_Template->compileAllTemplates() in XenForo/Deferred/Template.php at line 36 XenForo_Deferred_Template->execute() in XenForo/Model/Deferred.php at line 295 XenForo_Model_Deferred->runDeferred() in XenForo/Model/Deferred.php at line 429 XenForo_Model_Deferred->_runInternal() in XenForo/Model/Deferred.php at line 374 XenForo_Model_Deferred->run() in XenForo/ViewRenderer/Abstract.php at line 352 XenForo_ViewRenderer_Abstract::hasManualDeferredToRun() in XenForo/ViewRenderer/HtmlAdmin.php at line 50 XenForo_ViewRenderer_HtmlAdmin->renderRedirect() in XenForo/FrontController.php at line 618 XenForo_FrontController->renderView() in XenForo/FrontController.php at line 158 XenForo_FrontController->run() in /home/z22se/public_html/admin.php at line 13
Getting the above error during the upgrade of UI.X
admin.php?uix-styles/install-step2
Addon has been updated, and it's now stuck at this point.
Thanks for stopping by/clarifying @Mike