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OK - finally solved the problem by buying a new and different Bluetooth dongle. Asus (Bluetooth 4) worked first time. So it looks like my problem was in not having an internal Bluetooth connection and choosing a Bluetooth dongle that didn't work with the OSTC / Dive Log 6.

The reference is Asus USB ...

Sven,

Yes - not every time but three out of the last four tries it gave this error (below).

Mike



System.Reflection.TargetInvocationException: An exception occurred during the operation, making the result invalid. Check InnerException for exception details.

at System.ComponentModel ...

Sven,

Looks like the same error.

the error log says ...

INFO: Open: name=COM6
INFO: Configure: baudrate=115200, databits=8, parity=0, stopbits=1, flowcontrol=0
INFO: Timeout: value=3000
INFO: Sleep: value=300
INFO: Flush: queue=3, input=0, output=0
INFO: Write: size=1, data=BB
INFO: Read: size=1 ...

By the way - the laptop I'm using is an HP Ultrabook just over a year old.

Mike

Many thanks guys - tell me when you need me to try anything - otherwise I'll leave it with you experts.
Mike

And again:

INFO: Open: name=COM6
INFO: Configure: baudrate=115200, databits=8, parity=0, stopbits=1, flowcontrol=0
INFO: Timeout: value=3000
INFO: Sleep: value=300
INFO: Flush: queue=3, input=0, output=0
INFO: Write: size=1, data=BB
INFO: Read: size=0, data=
ERROR: Failed to receive the echo. [in ...

Will do - I've tried it scores of times of course but just now have copied the error log a couple of times. Hope this helps!

INFO: Open: name=COM6
INFO: Configure: baudrate=115200, databits=8, parity=0, stopbits=1, flowcontrol=0
INFO: Timeout: value=3000
INFO: Sleep: value=300
INFO: Flush: queue=3 ...

Just did it again and got this

INFO: Open: name=COM6
INFO: Configure: baudrate=115200, databits=8, parity=0, stopbits=1, flowcontrol=0
INFO: Timeout: value=3000
INFO: Sleep: value=300
INFO: Flush: queue=3, input=0, output=0
INFO: Write: size=1, data=BB
INFO: Read: size=1, data=BB
INFO: Read: size ...

Error Log

System.Reflection.TargetInvocationException: An exception occurred during the operation, making the result invalid. Check InnerException for exception details.

at System.ComponentModel.AsyncCompletedEventArgs.RaiseExceptionIfNecessary()
at Divinglog.Download.Libdivecomputer.BWorker ...

Matthias,
I have successfully upgraded the firmware of the OSTC2 via OSTC Companion - and using the Bluetooth connection, obviously. So I guess that confirms the connection is good. However, the download of dive data to Diving Log 6 is showing the same error as before!

Does that give any more clues ...

OK - have tried the order you suggested and opened the app (Dive Log 6) in administrator mode. I am getting the attached error report on the laptop computer. Everything else checks out ok - COM6 / OSTC 2 etc.

On the OSTC there is now a line under the Bluetooth button that says "Download mode ...

I believe so - I hit the Bluetooth option and it responds - then it times out after a few minutes. While it seems to be enabled I can see an indication on the Bluetooth screen on the laptop that there is a connection.

I tried to download like that numerous times. Then I tried on the OSTC 2 coming ...

Thanks Matthias,
I have attached some screen prints. As far as I can see the OSTC and the computer are paired and COM port 6 has been assigned.
Mike

I've also got problems downloading. I'm using a Bluetooth dongle, have upgraded to Dive Log 6, have downloaded FTDI driver, have selected OSTC 2. I appear to have a bluetooth connection to the computer, and the OSTC 2 seems to connect briefly to Dive Log 6 via COM port 6 but then disconnects and ...