Fatal Error: None - Problem importing old web logs #3656

Our company is considering using Piwik as our primary web analytics software, but must be able to import old web logs (python software). The problem is similar to that of other posts, which reports Fatal Error: None while printing:
1369 lines parsed, 0 lines recorded, 0 records/sec (avg), 0 records/sec (current)

We are running MySQL Server 5.5 and PHP 5.4 in IIS. The log files are from urchin and are .gz format. Every now and then, a log will successfully import but when we try again, it produces the same error. Any thoughts would be greatly appreciated and allow us to use Piwik as our primary software. Thanks.

Keywords: logs, importing, error

if it's similar to other posts then just post a reply in these posts, it will save us time and administrivia, thanks!