Perseus 1.5.2.6

[vexatiousmacaque]

Hello, I am encountering problem with exporting and analyzing data from the last upgrade. I am using Perseus_1.5.2.6.

My excel sheet contains one protein ID column (text) and  several abundance data (Numerical). I usually convert an excel sheet to text (tab delimited) or csv (tab delimited). When I import the sheet to Perseus, I take the numerical data in to main column and text column in to text. 

After I import them, I noticed that either row 5 or 10 takes numerical values as NaN. Rest of the data start from the right value but then randomizes.  

In this way, I cant do any analysis properly. But I can group them for tests.

If I import the numerical value as numerical instead of main, I dont see the problem. But i am unable to create any groups for t-tests. 

I am attaching a screenshot. What can be done to fix the above ? Thank you,