Excel自动化中文件存在仍抛找不到文件异常的排查求助

我正在开发一个用于提取和重构Excel文件的程序，前几天一切正常，但Excel突然抛出了之前从未出现过的异常。

让人困惑的是，抛出的异常内容是：

抱歉，我们找不到<文件>。它是否被移动、重命名或删除了？

这完全不合逻辑——我明明已经检查过目标文件存在，之后才触发的这个异常。代码里没有任何会导致该异常的逻辑，堆栈跟踪也提供不了有效信息（已附在文末）。

我搜索了这个错误，找到的解决方案都是针对手动打开文件的场景，完全不适用自动化批量打开的情况。更奇怪的是，手动打开该文件完全正常。

有人能帮忙分析下这个问题吗？

堆栈跟踪（Stack Trace） #

以下是程序崩溃时的堆栈跟踪，调试时仅显示第一部分，无内部异常：

Unhandled exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Runtime.InteropServices.COMException: Sorry, we couldn't find SolutionTreePro2.xlam. Is it possible it was moved, renamed or deleted?
   at Microsoft.Office.Interop.Excel.Workbooks.Open(String Filename, Object UpdateLinks, Object ReadOnly, Object Format, Object Password, Object WriteResPassword, Object IgnoreReadOnlyRecommended, Object Origin, Object Delimiter, Object Editable, Object Notify, Object Converter, Object AddToMru, Object Local, Object CorruptLoad)
   at ExcelFusion.VbaExtractor.ExtractVbaSourceCode(ExtractOptions options) in C:\Users\pauls\source\repos\Stricklen Pro\StricklenSolutions\ExcelFusion\VbaExtractor.cs:line 33
   at ExcelFusion.Program.<>c.<ConfigureExtractHandler>b__2_0(ExtractOptions options) in C:\Users\pauls\source\repos\Stricklen Pro\StricklenSolutions\ExcelFusion\Program.cs:line 102
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
   at System.Delegate.DynamicInvokeImpl(Object[] args)
   at System.CommandLine.NamingConventionBinder.ModelBindingCommandHandler.<InvokeAsync>d__11.MoveNext() in /_/src/System.CommandLine.NamingConventionBinder/ModelBindingCommandHandler.cs:line 87
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.CommandLine.NamingConventionBinder.ModelBindingCommandHandler.Invoke(InvocationContext context) in /_/src/System.CommandLine/NamingConventionBinder/ModelBindingCommandHandler.cs:line 133
   at System.CommandLine.Invocation.InvocationPipeline.<>c__DisplayClass4_0.<<BuildInvocationChain>b__0>d.MoveNext() in /_/src/System.CommandLine/Invocation/InvocationPipeline.cs:line 80
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass17_0.<<UseParseErrorReporting>b__0>d.MoveNext() in /_/src/System.CommandLine/Builder/CommandLineBuilderExtensions.cs:line 501
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass12_0.<<UseHelp>b__0>d.MoveNext() in /_/src/System.CommandLine/Builder/CommandLineBuilderExtensions.cs:line 393
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass22_0.<<UseVersionOption>b__0>d.MoveNext() in /_/src/System.CommandLine/Builder/CommandLineBuilderExtensions.cs:line 630
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass19_0.<<UseTypoCorrections>b__0>d.MoveNext() in /_/src/System.CommandLine/Builder/CommandLineBuilderExtensions.cs:line 562
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c.<<UseSuggestDirective>b__18_0>d.MoveNext() in /_/src/System.CommandLine/Builder/CommandLineBuilderExtensions.cs:line 536
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass16_0.<<UseParseDirective>b__0>d.MoveNext() in /_/src/System.CommandLine/Builder/CommandLineBuilderExtensions.cs:line 476
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c.<<RegisterWithDotnetSuggest>b__5_0>d.MoveNext() in /_/src/System.CommandLine/Builder/CommandLineBuilderExtensions.cs:line 207
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass8_0.<<UseExceptionHandler>b__0>d.MoveNext() in /_/src/System.CommandLine/Builder/CommandLineBuilderExtensions.cs:line 297

内容的提问来源于stack exchange，提问作者Paulo Santos