Yes, this is a known issue that has been fixed and will be available in our next service pack. What you can do to fix this is to open the .rlinq file with an XML editor (right click on the rlinq file and choose Open With...). Then find the byte array field definition in the file. It should look something similar to this:
Delete the serialized="true" and save the file. When you run your project again you should not be experiencing any exceptions.
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