Clearing stale errors in salesforce Eclipse
When the default salesforce eclipse builders are enabled there is an intermittent issue (perhaps triggered by too many 'saves'?) where a complication error can not be cleared. Restarting Eclipse and right clicking and deleting the errors has no effect - the same error comes back after saving. However manually saving to the server by using the 'Right Click > Force.com > Save to Server' option does work.
The only way I was able to clear this was to 'Right Click > Force.com > Refresh from Server' the file - this bug has been reported on Salesforce's Github.
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