by darryl » Wed Jan 23, 2019 9:52 pm
Hi. I don't use a Mac myself, but have seen plenty of people running PRESENCE on Parallels with no issues (although always the possibility of a bug in this particular version).
How are you trying to add a column for the new covariates? In the data input form, in the top right corner you can specify the number of covariates which defines the number of columns in the site-specific covariate sheet, or the number of sampling covariate sheets.
Where have you saved the data file before creating the project? By default, PRESENCE should create a folder to store all the files related to the analysis at the location of the data file, then move the data file into that folder. Also, when you create the project, there should be a couple of message boxes appear prompting you about creating a folder. Are you getting them?
Cheers
Darryl