List index out of bounds (0) - UnixExtractCommonPath

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.3.5

Error message:
List index out of bounds (0)

Stack trace:
(0020DDD1) System::Classes::TStringList::GetObject
(0020DDD1) System::Classes::TStringList::GetObject
(00B815B7) UnixExtractCommonPath
(00B7955D) Queue::C4132_0
(00B7E260) TDeleteQueueItem::TDeleteQueueItem
(00019439) TCustomScpExplorerForm::DeleteFiles
(00012AEA) TCustomScpExplorerForm::ExecuteDeleteFileOperation
(00012B9E) TCustomScpExplorerForm::ExecuteFileOperation
(00012DD8) TCustomScpExplorerForm::ExecuteFileOperation
(00012F97) TCustomScpExplorerForm::ExecuteFileOperationCommand
(0004F0F6) TNonVisualDataModule::ExplorerActionsExecute
(002757CC) System::Actions::TContainedActionList::ExecuteAction
(003595AD) Vcl::Actnlist::TCustomAction::Execute
(00226F2C) System::Classes::_18201
(00032161) USER32.dll
(00022F51) USER32.dll
(00021810) USER32.dll
(0002135B) USER32.dll.DispatchMessageW

(00E24BDD) C6612_0
(00E261B7) _ReThrowException
(0001968D) TCustomScpExplorerForm::DeleteFiles
(00012AEA) TCustomScpExplorerForm::ExecuteDeleteFileOperation
(00012B9E) TCustomScpExplorerForm::ExecuteFileOperation
(00012DD8) TCustomScpExplorerForm::ExecuteFileOperation
(00012F97) TCustomScpExplorerForm::ExecuteFileOperationCommand
(0004F0F6) TNonVisualDataModule::ExplorerActionsExecute
(002757CC) System::Actions::TContainedActionList::ExecuteAction
(003595AD) Vcl::Actnlist::TCustomAction::Execute
(00226F2C) System::Classes::_18201
(00032161) USER32.dll
(00022F51) USER32.dll
(00021810) USER32.dll
(0002135B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.3.7

Error message:
List index out of bounds (0)

Трассировка стека:
(0020DE21) System::Classes::TStringList::GetObject
(0020DE21) System::Classes::TStringList::GetObject
(00B81A1B) UnixExtractCommonPath
(00B799C1) Queue::C4132_0
(00B7E6C4) TDeleteQueueItem::TDeleteQueueItem
(0001946B) TCustomScpExplorerForm::DeleteFiles
(00012AF6) TCustomScpExplorerForm::ExecuteDeleteFileOperation
(00012BAA) TCustomScpExplorerForm::ExecuteFileOperation
(00012DE4) TCustomScpExplorerForm::ExecuteFileOperation
(00012FA3) TCustomScpExplorerForm::ExecuteFileOperationCommand
(0004F3D8) TNonVisualDataModule::ExplorerActionsExecute
(0027581C) System::Actions::TContainedActionList::ExecuteAction

(00E25905) C6612_0
(00E26EDF) _ReThrowException
(000196BF) TCustomScpExplorerForm::DeleteFiles
(00012AF6) TCustomScpExplorerForm::ExecuteDeleteFileOperation
(00012BAA) TCustomScpExplorerForm::ExecuteFileOperation
(00012DE4) TCustomScpExplorerForm::ExecuteFileOperation
(00012FA3) TCustomScpExplorerForm::ExecuteFileOperationCommand
(0004F3D8) TNonVisualDataModule::ExplorerActionsExecute
(0027581C) System::Actions::TContainedActionList::ExecuteAction

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.3.6

Error message:
List index out of bounds (0)

Stack trace:
(0020DE19) System::Classes::TStringList::GetObject
(0020DE19) System::Classes::TStringList::GetObject
(00B8166F) UnixExtractCommonPath
(00B79615) Queue::C4132_0
(00B7E318) TDeleteQueueItem::TDeleteQueueItem
(0001946B) TCustomScpExplorerForm::DeleteFiles
(00012AF6) TCustomScpExplorerForm::ExecuteDeleteFileOperation
(00012BAA) TCustomScpExplorerForm::ExecuteFileOperation
(00012DE4) TCustomScpExplorerForm::ExecuteFileOperation
(00012FA3) TCustomScpExplorerForm::ExecuteFileOperationCommand
(0004F3D0) TNonVisualDataModule::ExplorerActionsExecute
(00275814) System::Actions::TContainedActionList::ExecuteAction

(00E253C1) C6612_3
(00E2699B) _ReThrowException
(000196BF) TCustomScpExplorerForm::DeleteFiles
(00012AF6) TCustomScpExplorerForm::ExecuteDeleteFileOperation
(00012BAA) TCustomScpExplorerForm::ExecuteFileOperation
(00012DE4) TCustomScpExplorerForm::ExecuteFileOperation
(00012FA3) TCustomScpExplorerForm::ExecuteFileOperationCommand
(0004F3D0) TNonVisualDataModule::ExplorerActionsExecute
(00275814) System::Actions::TContainedActionList::ExecuteAction

The problem happens rarely. I cannot reproduce it.

@v340vuntt: Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.