A new problem with Aspose.Cells 22.214.171.124 is the crash below while saving as an XLSX. A save of the identical file as an XLS works fine. As previously reported, in 126.96.36.199, the XLSX file is generated but the pivot table is corrupted.
Once again, the situation is too complex to provide a small reproducible example, but this might be a case where simple inspection of the source code reveals the problem.
System.InvalidCastException: Unable to cast object of type 'System.Int32' to type 'ጡ.☇'. ... at ڀ.䞩.䞯(XmlTextWriter ङ) ... at ڀ.䞩.घ(XmlTextWriter ङ) ... at ڀ.䜒.䜚(㐢 ) ... at ڀ.䜒.䓢(㐢 ) ... at ڀ.䜒.䋳() ... at ڀ.䜒.घ() ... at Aspose.Cells.Workbook.Save(Stream stream, SaveOptions saveOptions) ... at ModelSheet.AsposeGenerator.AsposeGenerator.GetStreamForXLS(Object exbook, String format) in C:\Devo\ModelSheet\Model\Spreadsheet\Aspose.cs:line 487 ... at RequestProc.Processor.CreateOutput(String basedir, String user, String modelname, ProgressStep root, WorkData wd) in C:\Devo\ModelSheet\RequestProc\Processor.cs:line 469 ... at RequestProc.Processor.<>c__DisplayClassa.b__3() in C:\Devo\ModelSheet\RequestProc\Processor.cs:line 288