主题：[求助]报表出错

Dim Book As New XLS.Book(ProjectPath & "Attachments\厂发货登记.xls")
Dim fl As String = ProjectPath & "Reports\厂发货登记.xls"
Book.Build() '生成细节区
Book.Save(fl) '保存工作簿
Dim Proc As New Process '打开工作簿
Proc.File = fl
Proc.Start()

.NET Framework 版本：2.0.50727.3053
Foxtable 版本：2014.10.9.1
错误所在事件：窗口,厂发货登记,Button6,Click
详细错误信息：
Failed to open storage file.