UPDATE on APRIL 6, 2011: This pattern is re-edited to make the instruction to be easier and more clear to read and follow. Also it is uploaded on Ravelry database. It means that it’s now immediately downloadable! :D (See preview page of new edition on the left side)

• Gauge1 (for S & L size) – 20.5 sts / 31 rows (4”x4”)
• Gauge2 (for M & XL size) –19 sts / 29 rows (4”x4”)

ERRATA FOUND (June 30, 2009)
Abigail LaBranche found an errata among the instructions. (Thanks, Abigail!)

The sentence right below ROUND11 should be “Rep these 5 rounds 2 [3] more times. 145 [164] sts rem.” (not 3[4] more times..)

There was a mistake translating the chart in to the instructions.The chart is correct. If you followed the chart only you should be fine. Sorry guys!
The pattern sent out after June 30, 2009 will have corrected instructions.