For certain logical statements the following commands would work on different subsets of the data read myfile sort samlet select if (samlet = samlet[_n-1]) count if (samlet = samlet[_n-1]) test = test + "x" if (samlet = samlet[_n-1]) if (samlet = samlet[_n-1]) then test = test + "x" ....................................................................................................................

The bad news is that this is very bad behaviour. The good news is that the cause of the error has been located and a new build (v2.1.0.157) has been uploaded.

If you are not working with selects and if statements this will not affect your work.

Strange that no-one found the bug before (I found this yesterday) and the test environment has been extended with this aspect.

regards Jens Lauritsen EpiData Association