I have this problem even creating a simple blank page with only one merge field on it as attached.
However, I can find someone else with Word 2007 that can modify the template and it works fine sometimes it’s very unpredictable.
I am using Microsoft Office Word 200 (12.0.6212.1000) SP1 MSO (12.0.6213.1000)
Server Error in ‘/FileTrax’ Application.
Unsupported version of the stylesheet. For free technical support, please post this error and the file in the Aspose.Word Forums http://www.aspose.com/forums/ShowForum.aspx?ForumID=75.
**Description:** An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
**Exception Details:** Aspose.Word.PleaseReportException: Unsupported version of the stylesheet. For free technical support, please post this error and the file in the Aspose.Word Forums http://www.aspose.com/forums/ShowForum.aspx?ForumID=75.
**Source Error:**
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
**Stack Trace:**
[PleaseReportException: Unsupported version of the stylesheet. For free technical support, please post this error and the file in the Aspose.Word Forums http://www.aspose.com/forums/ShowForum.aspx?ForumID=75.]
.ᘽ.৮(BinaryReader ق, Int32 Ԛ, Int32 Ԟ) +130
ဩ.ဨ.৮() +676
Aspose.Word.Document.ك(Stream Ը, String ஹ, LoadFormat ൹, String ߺ) +381
Aspose.Word.Document..ctor(Stream stream) +35
AppSoft.FileTrax.Merge.GetTemplateInfo(Int32 TemplateID, Int32 OrderID, Int32 UserID) +1066
AppSoft.FileTrax.Merge.GetMainDataTable(Int32 TemplateID, Int32 UserID, Int32 OrderID, Int32 ClaimID) +43
AppSoft.FileTrax.MergeDataEdit.Page_Load(Object sender, EventArgs e) +508
System.Web.UI.Control.OnLoad(EventArgs e) +67
System.Web.UI.Control.LoadRecursive() +35
System.Web.UI.Page.ProcessRequestMain() +750
**Version Information:** Microsoft .NET Framework Version:1.1.4322.2407; ASP.NET Version:1.1.4322.2407