1. Yes the problem is with the leading zeros. To fix this go to the File | Project Definitions | Strata tab and enclose all of your numeric strata names and abbreviations in double quotation marks ("). Then repeat the steps outlined above, beggining with step 5. I’ll see if we can fix this issue and allow leading zeroes for numeric stratum names in the next version of Path.
2. You should manualy delete any blank rows in your initial conditions excel file prior to importing.