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Hi Jim, That's an interesting one! I can download the .ar2v file from the THREDDS server and I get the same error reading off of disk; however, I don't have that issue with other .ar2v files, such as KTLX. I tried different versions of the IDV, and the results are interesting, too: Latest from github, ncIdv 4.3.19-20131008144400 *** Null Pointer Exception IDV 4.1, ncIdv 4.3.19-SNAPSHOT-20130802112000 *** Null Pointer Exception IDV 4.0u1, ncIdv 4.3.16-20130311151100: *** Error: No data for Reflectivity file=/path/to/file IDV 3.1u1, ncIdv 4.2.?: *** can read the data just fine I can also read the file using python, so I don't think it's a data format change issue. It could be in netCDF-Java, it could be in the IDV. Yuan, do you know if anything has changed on the IDV side in terms of RADAR file reading? If not, I can take a look into the netCDF-Java side of things. Thanks for the report, Jim! Sean > Hi: > > This might be a THREDDS issue, but I am getting the following error: > > There was an error loading the data: > java.lang.NullPointerException > > WHen trying to load most recent times from the KTYX level II radar from IDD. > > Jim > > Ticket Details =================== Ticket ID: PHO-262246 Department: Support IDV Priority: Normal Status: Open