Invalid access to memory

Connected to my server - suddenly a server time-out occured.

Was editing a file BEFORE the time-out, thant time-out occured, than WinSCP restored the connection by itself - tried to upload the same edited file AFTER the time-out, WinSCP when down... (was not reacting / hanging during the time-out).

...nice program by the way - can't do without :-)

WinSCP 5.15.7

Error message:
Invalid access to memory.

Stack trace:
(003538EC)
(00928172)
(0092A1DA)
(00926F94)
(00087D7F) ntdll.dll
(00073221) ntdll.dll.KiUserExceptionDispatcher
(007C0D18)
(007C0E2A)
(007C0EE6)
(000AE47C)
(000AE6F4)
(000AC01F)
(000ABB78)
(000ABB3E)
(00070F3D)
(0006EF2A)
(0001885D)
(000482E3)
(000482A0)
(003A3E60)
(00043389) USER32.dll
(00023F87) USER32.dll
(000230D9) USER32.dll
(00022EBB) USER32.dll.DispatchMessageW

(009287DD)
(00929DB7)
(00070F5F)
(0006EF2A)
(0001885D)
(000482E3)
(000482A0)
(003A3E60)
(00043389) USER32.dll
(00023F87) USER32.dll
(000230D9) USER32.dll
(00022EBB) USER32.dll.DispatchMessageW

(007CFC49)
(00928172)
(0092A1DA)
(00926F94)
(00087D7F) ntdll.dll
(00073221) ntdll.dll.KiUserExceptionDispatcher
(007CF467)
(007CFC94)
(007CFE31)
(00817714)
(0023D146)
(003A3E60)
(00043389) USER32.dll
(00023F87) USER32.dll
(000230D9) USER32.dll
(00022EBB) USER32.dll.DispatchMessageW

(006FABA7)
(00087D7F) ntdll.dll
(00073221) ntdll.dll.KiUserExceptionDispatcher
(007CFD39)
(007CFE31)
(00817714)
(0023D146)
(003A3E60)
(00043389) USER32.dll
(00023F87) USER32.dll
(000230D9) USER32.dll
(00022EBB) USER32.dll.DispatchMessageW

(00417578)
(00087D7F) ntdll.dll
(00073221) ntdll.dll.KiUserExceptionDispatcher
(003A3E60)
(00043389) USER32.dll
(00023F87) USER32.dll
(000230D9) USER32.dll
(00022EBB) USER32.dll.DispatchMessageW

(007CFC49)
(00928172)
(0092A1DA)
(00926F94)
(00087D7F) ntdll.dll
(00073221) ntdll.dll.KiUserExceptionDispatcher
(007CF467)
(007CFC94)
(007CFE31)
(00817714)
(0023D146)
(00101BAF)
(00002664)
(009261A9)
(00066B72) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00066B3F) ntdll.dll.RtlGetAppContainerNamedObjectPath

(006FABA7)
(00928172)
(0092A1DA)
(00926F94)
(00087D7F) ntdll.dll
(00073221) ntdll.dll.KiUserExceptionDispatcher
(007CFD39)
(007CFE31)
(00817714)
(0023D146)
(00101BAF)
(00002664)
(009261A9)
(00066B72) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00066B3F) ntdll.dll.RtlGetAppContainerNamedObjectPath

(00413DED)
(00928172)
(0092A1DA)
(00926F94)
(00087D7F) ntdll.dll
(00073221) ntdll.dll.KiUserExceptionDispatcher
(00915B2B)
(009161EE)
(0092900B)
(0092A021)
(00926F94)
(00087D7F) ntdll.dll
(00928102)
(0092A2EE)
(00926F94)
(00087D7F) ntdll.dll
(00073221) ntdll.dll.KiUserExceptionDispatcher
(007CFD39)
(007CFE31)
(00817714)
(0023D146)
(00101BAF)
(00002664)
(009261A9)
(00066B72) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00066B3F) ntdll.dll.RtlGetAppContainerNamedObjectPath

(00417578)
(00928172)
(0092A1DA)
(00926F94)
(00087D7F) ntdll.dll
(00073221) ntdll.dll.KiUserExceptionDispatcher
(00101BAF)
(00002664)
(009261A9)
(00066B72) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00066B3F) ntdll.dll.RtlGetAppContainerNamedObjectPath

Status: unknown_rel_addr

The problem happens rarely. I cannot reproduce it.