PDF export problem with labels (missing labels in the graph)

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Dear community,

I am quite close to an important deadline and I have a big issue with the pdf export. Some labels of the graph, about 40, are placed in the center of the network without reason, overlapped. The png export is fine, but I need to edit a vectorial export. I tried svg export, but it returns is an error. I am working with a mac, using the last Gephi version, 0.8.2. Could you help me? This is my Gephi file.

https://www.dropbox.com/s/4nbc6acsq3na0 ... ords.gephi

Thank you very much for your help.

Dario