Steps to Reproduce

1. run zss with attached Excel file
2. switch to 2nd sheet

Actual Result

2ns sheet displays totally blank without gridline.

Expected Result

display the original sheet content.

Debug Information

IE 10 doesn't have such issue.

3.6.0 doesn't have such issue.

The root cause might be: too many CSS rules (over 4096) in one CSS file. It's over IE 9's upper bound.
ref: http://blogs.msdn.com/b/ieinternals/archive/2011/05/14/10164546.aspx

The screenshot captured fro IE 9's developer tool:

This issue relates to ZSS-617.

Workaround

Create a new file with Excel 2007 and copy the original content to the new file. The new file can be rendered correctly.