Hi,
Thanks for your feedback.
As for your new issue, please make sure you have removed all old Spire dlls before adding new dlls in your project. Below is the information of the dlls in
Spire.Office V5.2.0 for your kind reference:
Spire.Doc.dll v8.2.4
Spire.Pdf.dll v6.2.1
Spire.XLS.dll v10.1.8
Spire.Email.dll v3.1.0
Spire.DocViewer.Forms.dll v5.1.1
Spire.PdfViewer.Forms.dll v5.1.4
Spire.PdfViewer.Asp.dll v5.1.4
Spire.Presentation.dll v5.1.3
Spire.Spreadsheet v4.1.0
Spire.OfficeViewer.Forms.dll v5.2.0
Spire.Barcode.dll v4.1.1
Spire.DataExport.dll v4.1.9
Spire.DataExport.ResourceMgr.dll v2.1.0,
Spire.Common.dll v3.2.2
Spire.License.dll v1.3.8
Sincerely,
Betsy
E-iceblue support team