I have had folks using different repositories complain about getting the message below. We have only seen this over the past few months. Our upgrade to version 12 from 11 was in August. 

In one case, I watched the user reproduce the message. She had multiple documents in a folder and had only one document selected, she assigned a Template and fields and clicked save. Same process she engages in over and over, day after day. This message then popped up. If she clicked Cancel, changes saved. If she clicked Discard they did not and it took her back to the folder.

On the server, in the WebClient Operational log, I see this error:  

Input string was not in a correct format. OperationID: 1111cd2b61dcd7fe5ba3ea78768d32a9 Operation: /laserfiche/Browse.aspx?repo=Contracts Message: Exception details: Message: Input string was not in a correct format. Stack trace: at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal) at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info) at Laserfiche.WebAccess.Common.Searching.CustomQuickSearch.GetCustomQuickSearchItems(WebAccessSession WASession, String repoName) at Laserfiche.WebAccess.Browse.OnLoad(EventArgs e) Exception encountered, stack trace: Laserfiche.WebAccess.Browse.OnLoad System.Web.UI.Control.LoadRecursive System.Web.UI.Page.ProcessRequestMain System.Web.UI.Page.ProcessRequest System.Web.UI.Page.ProcessRequest System.Web.UI.Page.ProcessRequest Repository: Contracts Session: y1tek343