SmartCrawl Checkup times out and was unable to complete.

I am unable to get an SEO checkup report from SmartCrawl. Every time I try to run the checkup, it stays stuck at 0% for a long time, like 5-8 minutes and then suddenly jumps to 100%. Then the page refreshes and shows the following error instead of the checkup report : "Scan timed out and was unable to complete." Please advice.