error when trying to open designer

Can somebody help understand this problem?

Application: Designer.exe

Framework Version: v4.0.30319

Description: The process was terminated due to an unhandled exception.

Exception Info: System.FormatException

  at System.Number.StringToNumber(System.String, System.Globalization.NumberStyles, NumberBuffer ByRef, System.Globalization.NumberFormatInfo, Boolean)

  at System.Number.ParseInt32(System.String, System.Globalization.NumberStyles, System.Globalization.NumberFormatInfo)

  at FastReport.Design.PageDesigners.Code.CodePageDesigner.UpdateFont()

  at FastReport.Design.PageDesigners.Code.CodePageDesigner.UpdateDpiDependencies()

  at FastReport.Design.PluginCollection.UpdateDpiDependencies(System.Object)

  at FastReport.Design.ReportTab.UpdateDpiDependencies()

  at FastReport.Design.Designer.AddReportTab(FastReport.Design.ReportTab)

  at FastReport.Design.Designer.InitTabs()

  at FastReport.Report.Design(Boolean, System.Windows.Forms.Form)

  at FastReport.Report.Design()

  at Designer.Program.Main(System.String[])

Leave a Comment

Rich Text Editor. To edit a paragraph's style, hit tab to get to the paragraph menu. From there you will be able to pick one style. Nothing defaults to paragraph. An inline formatting menu will show up when you select text. Hit tab to get into that menu. Some elements, such as rich link embeds, images, loading indicators, and error messages may get inserted into the editor. You may navigate to these using the arrow keys inside of the editor and delete them with the delete or backspace key.