Data corrupted when sending large files at 115200 bauds

[jlder]

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Testing an OpenLog with a Windows PC using an USB/Serial interface for large data transfer at 115200. I run Advanced Serial Port Terminal and Realterm on Windows, with same results. I send a 100KByte file. If I set the USB/serial interface to 8 bits, no parity and 1 stop bit, I get garbage in the OpenLog. If I use 8 bits, Space parity and 1 stop bit, I get perfectly good communication. It is like the 8 bits are shifted and it requires a ninth bit at zero to get the correct value (I only send ASCII data). Has anybody encountered the same problem?