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<p>As your errors refer to the Digitzing Tools plugin, try
deactivating this first. Maybe there is a bug.</p>
<p>Cheers</p>
<p>Bernd<br>
</p>
<div class="moz-cite-prefix">Am 30.05.19 um 04:45 schrieb Tony
Shepherd (FarmMaps NZ):<br>
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<div class="WordSection1">
<p class="MsoNormal">Hi All<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Does anybody have issues with the Geometry
Buffer Tool failing if used more than once in a QGis session?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">What I am doing is that I have a polygon
representing an area to be planted in trees. I have a stream
running through the area and cant plant within 10m of the
stream, so I am digitising the stream, creating a 10m buffer
and using that to cut an area out of my existing planting
polygon. The first time it works a treat and then if I reuse
the tool it fails. Only way around is to restart QGIS and
then it works fine the first time, but fails if used again.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">QGIS 3.6.3<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Using as follows:<o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:38.25pt;text-indent:-18.0pt;mso-list:l1
level1 lfo2"><!--[if !supportLists]--><span
style="font-family:Symbol"><span style="mso-list:Ignore">·<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]-->create a few lines. <o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:38.25pt;text-indent:-18.0pt;mso-list:l1
level1 lfo2"><!--[if !supportLists]--><span
style="font-family:Symbol"><span style="mso-list:Ignore">·<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]-->Use the buffer tool to
create a region based on parameters and as a result, it
creates a temporary layer called “Buffered”. <o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:38.25pt;text-indent:-18.0pt;mso-list:l1
level1 lfo2"><!--[if !supportLists]--><span
style="font-family:Symbol"><span style="mso-list:Ignore">·<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]-->Use that buffer to
erase some area from an existing polygon. <o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:38.25pt;text-indent:-18.0pt;mso-list:l1
level1 lfo2"><!--[if !supportLists]--><span
style="font-family:Symbol"><span style="mso-list:Ignore">·<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]-->Close the layer
“Buffered” as I no longer need it.<o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:38.25pt;text-indent:-18.0pt;mso-list:l1
level1 lfo2"><!--[if !supportLists]--><span
style="font-family:Symbol"><span style="mso-list:Ignore">·<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]-->Digitise some other
lines and repeat the process.<o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:38.25pt;text-indent:-18.0pt;mso-list:l1
level1 lfo2"><!--[if !supportLists]--><span
style="font-family:Symbol"><span style="mso-list:Ignore">·<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]-->Now I get an error, so
if I completely close QGIS, restart QGIS it works, but only
once. If I go to try the same process a second time it fails,
but again restart fixes it.<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:38.25pt"><o:p> </o:p></p>
<p class="MsoNormal">The error is as follows:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier
New"">Traceback (most recent call last):<br>
File
"C:\Users\Tony\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\DigitizingTools\tools\dtcutter.py",
line 43, in process<br>
dlg = DtChooseCutterLayer(self.iface,
self.isPolygonLayer(passiveLayer), self.lastChoice)<br>
File
"C:\Users\Tony\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\DigitizingTools\dtDialog.py",
line 77, in __init__<br>
self.initialize()<br>
File
"C:\Users\Tony\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\DigitizingTools\dtDialog.py",
line 87, in initialize<br>
if self.cutterLayer.id() == valueArray[0]:<br>
RuntimeError: wrapped C/C++ object of type QgsVectorLayer
has been deleted<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-NZ"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-NZ">Cheers<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-NZ">Tony<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-NZ"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span
style="color:#404040;mso-fareast-language:EN-NZ">Tony
Shepherd</span></b><span
style="color:#595959;mso-fareast-language:EN-NZ"> </span><b><span
style="mso-fareast-language:EN-NZ">|</span></b><span
style="color:#595959;mso-fareast-language:EN-NZ">
GeoSpatial / Mapping Manager<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="color:#595959;mso-fareast-language:EN-NZ">Ph 027 435
6193 </span><b><span style="mso-fareast-language:EN-NZ">|</span></b><span
style="color:#595959;mso-fareast-language:EN-NZ"> E
<a class="moz-txt-link-abbreviated" href="mailto:tony@farmmaps.nz">tony@farmmaps.nz</a><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="color:#595959;mso-fareast-language:EN-NZ">FarmMaps
NZ, 3 Kerwood Place, Gore 9740<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="color:#595959;mso-fareast-language:EN-NZ"><o:p> </o:p></span></p>
<div
style="mso-element:para-border-div;border:none;border-bottom:solid
windowtext 1.0pt;padding:0cm 0cm 0cm 0cm">
<p class="MsoNormal" style="border:none;padding:0cm"><span
style="color:#595959;mso-fareast-language:EN-NZ"><img
style="width:1.6666in;height:.7812in" id="_x0000_i1027"
src="cid:part1.F75C4326.8942E845@gmx.de"
alt="FM_logo1_small (Custom)" class="" width="160"
height="75"><o:p></o:p></span></p>
<p class="MsoNormal" style="border:none;padding:0cm"><span
style="color:#7B7B7B;mso-fareast-language:EN-NZ"><o:p> </o:p></span></p>
</div>
<p class="MsoNormal"><b><span
style="font-family:"Arial",sans-serif;color:#7B7B7B;mso-fareast-language:EN-NZ"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><a
href="http://tonyshepherd8.wixsite.com/home"
moz-do-not-send="true"><b><span
style="font-family:"Arial",sans-serif;color:windowtext;mso-fareast-language:EN-NZ;text-decoration:none"><img
style="width:1.6354in;height:.3541in"
id="Picture_x0020_1"
src="cid:part2.3B97848A.CEFEB8BC@gmx.de" class=""
width="157" height="34" border="0"></span></b></a><a
href="https://www.wunderground.com/personal-weather-station/dashboard?ID=ISTLGORE2"
moz-do-not-send="true"><b><span
style="font-family:"Arial",sans-serif;color:windowtext;mso-fareast-language:EN-NZ;text-decoration:none"><img
style="width:1.7708in;height:.3854in"
id="Picture_x0020_3"
src="cid:part4.5A427ABD.5367A00A@gmx.de" class=""
width="170" height="37" border="0"></span></b></a><b><span
style="font-family:"Arial",sans-serif;mso-fareast-language:EN-NZ"><o:p></o:p></span></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
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