SharePoint List from Excel - stops at 150 rows and will only load when I hit refresh before close

Hi All - I'm creating a list from excel. my data is a Table.  If I hit the X on the Load Complete dialog box the list does not load. If I hit refresh instead of closing the dialog I only get a subset of the data. For this worksheet I only get 150 out of the 1270 rows.  There are no breaks or anything in the table to cause the load to stop here. Anyone come across anything like this before?  Thanks in advance