I was using 6.0, with that version I have had issues where both Up and Downstream SNRM graphs stop updating, which you have to close and restart DSLstats, along with ticking the SNRM check box again for it to work.
Though that is now a minor issue, I'm now getting "Invalid Floating Point Error" as soon as it hits the end of the graph, clicking on "Ok" just causes the program the lockup. Have found just leaving the error (not selecting "Ok" or "Close") it will continue to log but just can't use the program. Didn't have the problem until a substation failed this morning, didn't notice the issue until I was wondering why it stopped updating. I've since updated to 6.0.2 but still have the error.
Using Netcomm NF10WV (which I think is only available in Australia) via telnet and DSLstats is on a Windows 10 PC. Using DSLstats to log my dropouts and the SNR related stuff.