Hi we tried to convert a 1.0 project to a 2.0 project using the online server and got the following error: Job failed: ApiError: Cannot add child - key already in use: ccp.nmr.NmrConstraint.DistanceConstraintItem:<ccp.nmr.NmrConstraint.DistanceConstraint [1, 1, 1026]>:frozenset([<ccp.nmr.NmrConstraint.FixedResonance [1, 2]>, <ccp.nmr.NmrConstraint.FixedResonance [1, 4]>]) File "/data/ccpn/www/cgi-bin/upgrade/upgrade", line 575, in convertMajorProject doMajorConvert(dataStem) File "/data/ccpn/www/cgi-bin/upgrade/upgrade", line 549, in doMajorConvert p = Converters.doMajorUpgradeToCurrent(oldPath, oldTag, newDir=newDir) File "/data/ccpn/upgrade/cvsroot_branch_2_0_3/ccpn/python/memops/format/compatibility/Converters.py", line 76, in doMajorUpgradeToCurrent globalMapping=globalMapping, oldTags=oldTags) File "/data/ccpn/upgrade/cvsroot_branch_2_0_3/ccpn/python/memops/format/compatibility/part1/Converters1.py", line 95, in majorUpgradeToCurrent return upgrader.majorUpgrade(doSave=doSave) File "/data/ccpn/upgrade/cvsroot_branch_2_0_3/ccpn/python/memops/format/compatibility/part1/Converters1.py", line 204, in majorUpgrade self.transferData() File "/data/ccpn/upgrade/cvsroot_branch_2_0_3/ccpn/python/memops/format/compatibility/part1/Converters1.py", line 618, in transferData oldVersionStr=self.oldVersionStr) File "/data/ccpn/upgrade/cvsroot_branch_2_0_3/ccpn/python/memops/general/Util.py", line 1008, in transferData linkTopToParent=True) File "/data/ccpn/upgrade/cvsroot_branch_2_0_3/ccpn/python/memops/xml/Implementation.py", line 4750, in linkChildData + ": %s:%s:%s" % (obj.getQualifiedName(), obj.getParent(), key) however, the response from the server gives no information as to what to do next... It seems that the original project isn't valid .... regards gary