Thanks for th feedback! The installer will overwrite any version that has the same major
version. Q3.2010 has a different major version thats why it is still there. If you do not use the older version - I would recommend to remove it - just to keep it cleaner.
Trial license is not tied to a version - it is a 60 days period trial.
If you have any other questions - please let us know.
the Telerik team
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