When I try to use Dissolve in Processing I get this error:

"local variable 'nElement' referenced before assignment See log for more details"

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I have seen this problem reported in: https://hub.qgis.org/issues/14612

So then I did what is recommended by Alexander Bruy removed the processing folder from C:\Users\user.qgis2 however I still have the same problem, I did a Full Uninstall (delet all folders...) of Qgis and reinstalled from standalone installer QGIS-OSGeo4W-2.14.3-1-Setup-x86_64 but the problem persist.

I suspect that it is a bug...

PS: when I use the "Dissolve all" check, the process work, its only when I try to dissolve from a selected field that give me the error

QGIS 2.14.3 Windows 10 64bits (1511 10586.318) Processing 2.12.99

  • 1
    GIS SE is a database of focused GIS questions with answers -- As a new user, please take the Tour for a better idea how things are supposed to work. Unfortunately, this reads more like a bug report than a question. If you have a specific task to accomplish, please edit the question to focus on that. – Vince Jun 6 '16 at 2:03
  • thank you very much for your answer ... yes I guessed that it seems like a bug report, but just wanted to know if I was doing something wrong with the tool thank you very much! I´ll try to report the bug – Eduardo Jun 6 '16 at 3:18
  • Same problem here... there is also "Line dissolve" in Saga tools... – Seb Des Aug 17 '18 at 13:59
  • This does not really answer the question. If you have a different question, you can ask it by clicking Ask Question. You can also add a bounty to draw more attention to this question once you have enough reputation. - From Review – Mark Ireland Aug 17 '18 at 14:33

You can use Vector polygon tools > Polygon dissolve (by attribute) from SAGA in the Processing Toolbox. I had the same issue.

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