SYMPTOM:
In Strategy Web 9.4.1 Hotfix 3, the following error message appears when selecting a project to access the login page:

TypeError: "Unable to set value of the property 'src': object is null or undefined"
<record reset="true"> <package>com.Strategy.web.tags</package> <level>SEVERE</level> <miliseconds>1398796955757</miliseconds> <timestamp>04/29/2014 14:12:35:975</timestamp> <thread>2</thread> <class>DynamicTagImpl</class> <method>getMethod</method> <message>Error in layout '/WEB-INF/xml/layouts/LoginXHTMLLayout.xml': line 16: Inside <render> tag: Method not found on class com.Strategy.web.app.transforms.LoginXHTMLTransform: renderUsherLogin(com.Strategy.web.beans.MarkupOutput) (com.Strategy.web.tags.MalformedMethodException)</message> <exception>com.Strategy.web.tags.MalformedMethodException: Error in layout '/WEB-INF/xml/layouts/LoginXHTMLLayout.xml': line 16: Inside <render> tag: Method not found on class com.Strategy.web.app.transforms.LoginXHTMLTransform: renderUsherLogin(com.Strategy.web.beans.MarkupOutput) at com.Strategy.web.tags.DynamicTagImpl.getMethod(Unknown Source) at com.Strategy.web.tags.DynamicTagImpl.invokeMethod(Unknown Source) at com.Strategy.web.tags.RenderTagImpl.render(Unknown Source) at com.Strategy.web.tags.TagImpl.renderChildTags(Unknown Source) at com.Strategy.web.tags.TagImpl.render(Unknown Source) at com.Strategy.web.tags.TagImpl.renderChildTags(Unknown Source) at com.Strategy.web.tags.TagImpl.render(Unknown Source) at com.Strategy.web.tags.TagImpl.renderChildTags(Unknown Source) at com.Strategy.web.tags.TagImpl.render(Unknown Source) at com.Strategy.web.tags.IfTagImpl.render(Unknown Source) at com.Strategy.web.tags.TagImpl.renderChildTags(Unknown Source) at com.Strategy.web.tags.TagImpl.render(Unknown Source) at com.Strategy.web.transform.AbstractLayoutTransform.transformUsingLayout(Unknown Source) at com.Strategy.web.app.transforms.AbstractAppTransform.renderLayout(Unknown Source) at com.Strategy.web.app.transforms.LoginXHTMLTransform.transformForRequestSuccessful(Unknown Source) at com.Strategy.web.app.transforms.LoginTransform.transformForRequestWaitingForUserInput(Unknown Source) at com.Strategy.web.app.transforms.AbstractAppTransform.checkStatus(Unknown Source) at com.Strategy.web.app.transforms.AbstractAppTransform.renderShell(Unknown Source) at com.Strategy.web.app.transforms.AbstractAppTransform.transform(Unknown Source) at com.Strategy.web.beans.AbstractTransformable.transform(Unknown Source) at com.Strategy.web.beans.AbstractTransformable.transform(Unknown Source) at com.Strategy.web.app.beans.LoginBeanImpl.generateOutput(Unknown Source) at com.Strategy.web.app.taglibs.DisplayBeanTagHelper.getContent(Unknown Source) </exception> </record>

Same Version for both ASP.Net and XML API - Expected

ACTION:
Uninstall Strategy Analytics 9.4.1 Hotfix 3, restart the Operating System and install again.
NOTE:
For additional information on Strategy Analytics 9.4.1 Hotfix 3, refer to the Strategy KB: