Ok, sounds like it should be working ok now if you were not getting these two errors. Please try deleting the cache file for DW to see if this stops the errors from occurring. Here is a link to the steps that you can take to do this:
common_installation_issues.pdf
If this does not work then there might be an issue with your configuration folder. If this is the case you will need to rename this folder to have it be recreated by DW. Here is a link to the steps you can take for this:
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