Selenium WaitForCondition fails after 30 minutes instead of 20 seconds
_selenium.WaitForCondition("!selenium.isElementPresent("" + locator + "")", "20000");

Selenium.SeleniumException: ERROR: Command timed out

SeleniumException : ERROR Server Exception: unexpected command
json={command:"waitForCondition",target:"!selenium.isElementPresent("//div[contains(@id, 'atlProgress') and contains(@style, 'display: block')]")",value:"20000"}
in place before new command waitForCondition could be added