https://community.esri.com/t5/arcgis-pro-sdk-questions/my-custom-application-settings-page-does-not-load/m-p/1230046#M9046 <P>I followed this guide to implement a page with settings for my ArcGIS Pro AddIn (for 2.9.x):</P><P><A href="https://github.com/esri/arcgis-pro-sdk/wiki/ProGuide-Custom-settings#custom-application-settings" target="_blank" rel="noopener">https://github.com/esri/arcgis-pro-sdk/wiki/ProGuide-Custom-settings#custom-application-settings</A></P><P>When I open the Options dialog, it works on my machine.</P><P>When I install the Add In on the customers machine, and I open the Options dialog, there is a wait indicator which does not stop. My page is never shown. What can be wrong here?</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Stefan_Offermann_0-1668011977236.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/55620i1C30B7871514D865/image-size/medium?v=v2&amp;px=400" role="button" title="Stefan_Offermann_0-1668011977236.png" alt="Stefan_Offermann_0-1668011977236.png" /></span></P><P>The version of Pro is exactly the same on both machines:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Stefan_Offermann_1-1668012036428.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/55621iCC201718B343C2F1/image-size/medium?v=v2&amp;px=400" role="button" title="Stefan_Offermann_1-1668012036428.png" alt="Stefan_Offermann_1-1668012036428.png" /></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Stefan_Offermann_2-1668012053307.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/55622i9ADD30168B43C9CD/image-size/medium?v=v2&amp;px=400" role="button" title="Stefan_Offermann_2-1668012053307.png" alt="Stefan_Offermann_2-1668012053307.png" /></span></P><P>&nbsp;</P><P>&nbsp;</P> Wed, 09 Nov 2022 16:41:24 GMT Stefan_Offermann 2022-11-09T16:41:24Z https://community.esri.com/t5/arcgis-pro-sdk-questions/my-custom-application-settings-page-does-not-load/m-p/1230046#M9046 <P>I followed this guide to implement a page with settings for my ArcGIS Pro AddIn (for 2.9.x):</P><P><A href="https://github.com/esri/arcgis-pro-sdk/wiki/ProGuide-Custom-settings#custom-application-settings" target="_blank" rel="noopener">https://github.com/esri/arcgis-pro-sdk/wiki/ProGuide-Custom-settings#custom-application-settings</A></P><P>When I open the Options dialog, it works on my machine.</P><P>When I install the Add In on the customers machine, and I open the Options dialog, there is a wait indicator which does not stop. My page is never shown. What can be wrong here?</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Stefan_Offermann_0-1668011977236.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/55620i1C30B7871514D865/image-size/medium?v=v2&amp;px=400" role="button" title="Stefan_Offermann_0-1668011977236.png" alt="Stefan_Offermann_0-1668011977236.png" /></span></P><P>The version of Pro is exactly the same on both machines:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Stefan_Offermann_1-1668012036428.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/55621iCC201718B343C2F1/image-size/medium?v=v2&amp;px=400" role="button" title="Stefan_Offermann_1-1668012036428.png" alt="Stefan_Offermann_1-1668012036428.png" /></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Stefan_Offermann_2-1668012053307.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/55622i9ADD30168B43C9CD/image-size/medium?v=v2&amp;px=400" role="button" title="Stefan_Offermann_2-1668012053307.png" alt="Stefan_Offermann_2-1668012053307.png" /></span></P><P>&nbsp;</P><P>&nbsp;</P> Wed, 09 Nov 2022 16:41:24 GMT https://community.esri.com/t5/arcgis-pro-sdk-questions/my-custom-application-settings-page-does-not-load/m-p/1230046#M9046 Stefan_Offermann 2022-11-09T16:41:24Z https://community.esri.com/t5/arcgis-pro-sdk-questions/my-custom-application-settings-page-does-not-load/m-p/1230361#M9055 <P>The problem was a Setting of type Date, which had no default value:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Stefan_Offermann_0-1668076714776.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/55682i53EEE7C20937FC4C/image-size/medium?v=v2&amp;px=400" role="button" title="Stefan_Offermann_0-1668076714776.png" alt="Stefan_Offermann_0-1668076714776.png" /></span></P><P>&nbsp;</P><P>After setting a reasonable value, the Options page loaded:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Stefan_Offermann_1-1668076746325.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/55683i8E84B804F16471EC/image-size/medium?v=v2&amp;px=400" role="button" title="Stefan_Offermann_1-1668076746325.png" alt="Stefan_Offermann_1-1668076746325.png" /></span></P><P>&nbsp;</P><P>This line of code failed in the InitializeAsync() method:</P><PRE>StartDate = _startDateOrig = Settings.Default.StartDate;</PRE><P>&nbsp;</P> Thu, 10 Nov 2022 10:40:26 GMT https://community.esri.com/t5/arcgis-pro-sdk-questions/my-custom-application-settings-page-does-not-load/m-p/1230361#M9055 Stefan_Offermann 2022-11-10T10:40:26Z