Hi Irzigen,
The first error "No valid joint data..." is most likely because the files names of the output files are not unique. Please this post from yesterday on the same issue:
So you need to ensure file names are unique.
The second problem ... that the analysis goes through but is listed as an error is because there is indeed an error. If you look at the output file you will see that it can not find an .anyset file. This would happen if you did not run a parameter optimization first which would create this file.
The last error with the "init_sys_streams" error I do not have a good idea about, do your model use python hooks?
Concerning your last post this is not a problem the data dump will have different formats depending on the nature of the data, so this is correct and not a problem.
Best regards
Søren