This is weird. I added the Excel-style to the WinGrid filter editor. Now, after doing a ClickOnce publish, the ClickOnce upgrade is throwing an error during install stating that it can't find Infragistics2.Win.SupportDialogs.v9.1 in the GAC. I did change the Publish options to Require and Include this, so not sure why it would be looking for it in the GAC. Also, the app worked fine prior to making the Grid filter change.
Is it possible that you are missing one of the assemblies that that one references? That assembly references most of our assemblies since it uses many of our controls on the various dialogs. It references Shared, Misc, CalcManager, CalcManager.FormulaBuilder, DataSource, Editors, Grid, StatusBar, TabControl, Toolbars, Tree and Win so you would have to make sure to include all of these.
The Publish Application Files initially referenced this particlar dll as "Prequisite" and ran fine until I modified the grid to set Displaylayout/Override/FilterUIProvider = ultraGridFilterUIProvider1. It worked fine on my machine but failed on what I assume was now a required dll that was not in the GAC on most client machines. I changed the status from "Prequisite" to "Include" and Download Group to "Required" so that it would be included in the deploy folder, however I continued to get the error message I referenced earlier.
I WAS able to force it to work by changing the reference property "Copy Local" to "true", which worked... however, it is not clear why this particulary dll is behaving different than all the others, which are not set to "Copy Local=true".
Here are my Publish settings for Infragistics: