OperationalError: Could not decode to UTF-8 column 'newvalue' with text

[jb@…]

Hello,

i have create a new trac site (Trac 0.10.3) and backup (with hotcopy) my old trac database. I had Trac 0.9.pre before.

Now, I have convert the database to sqlite3. (sqlite trac2.db .dump | sqlite3 trac.db)

But now if i open the timeline site, I get the following decode error message:

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Internal Error Ticket changes event provider (TicketModule) failed:

OperationalError: Could not decode to UTF-8 column 'newvalue' with text '(In [13269]) L�schrountine fixes #2005'

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I have test it with the newest trac Version. I get the same error.

Is it a bug, or anybody know a fix for this?

Thanks!