Using ONE 5.4.6 fresh install with separate ONE server and Sunstone Server, I am able to download apps from marketplace and able to create and run vms.
The only problem is while uploading the image from Sunstone > create image > image upload option from local machine I am getting below error, Ngnx is also installed on Sunstone Server
Tue Mar 6 15:08:30 2018 [Z0][InM][D]: Host NY-Compute-3C-A-01 (1) successfully monitored.
Tue Mar 6 15:08:35 2018 [Z0][InM][D]: Host NY-Compute-3C-A-03 (3) successfully monitored.
Tue Mar 6 15:08:37 2018 [Z0][AuM][D]: Message received: AUTHENTICATE SUCCESS 15 -
Tue Mar 6 15:08:37 2018 [Z0][ReM][D]: Req:976 UID:0 one.image.allocate invoked , "NAME=“Master-Xubuntu…”, 104
Tue Mar 6 15:08:37 2018 [Z0][ImM][I]: Command execution fail: /var/lib/one/remotes/datastore/fs/stat PERTX0RSSVZFUl9BQ1RJT05fREFUQT48SU1BR0U+PFBBVEg+L3Zhci90bXAvNTM0OT
A0ODMyMC1UTVBMLVRQLVh1YnVudHUtMTYwNC1ERXFjb3cyPC9QQVRIPjwvSU1BR0U+PERBVEFTVE9SRT48SUQ+MTA0PC9JRD48VUlEPjA8L1VJRD48R0lEPjA8L0dJRD48VU5BTUU+b25lYWRtaW48L1VOQU1FPjxHTkFNRT
5vbmVhZG1pbjwvR05BTUU+PE5BTUU+TlktRFMtSU1BR0UtTFJTPC9OQU1FPjxQRVJNSVNTSU9OUz48T1dORVJfVT4xPC9PV05FUl9VPjxPV05FUl9NPjE8L09XTkVSX00+PE9XTkVSX0E+MDwvT1dORVJfQT48R1JPVVBfVT
4xPC9HUk9VUF9VPjxHUk9VUF9NPjA8L0dST1VQX00+PEdST1VQX0E+MDwvR1JPVVBfQT48T1RIRVJfVT4wPC9PVEhFUl9VPjxPVEhFUl9NPjA8L09USEVSX00+PE9USEVSX0E+MDwvT1RIRVJfQT48L1BFUk1JU1NJT05TPj
xEU19NQUQ+PCFbQ0RBVEFbZnNdXT48L0RTX01BRD48VE1fTUFEPjwhW0NEQVRBW3Fjb3cyXV0+PC9UTV9NQUQ+PEJBU0VfUEFUSD48IVtDREFUQVsvdmFyL2xpYi9vbmUvL2RhdGFzdG9yZXMvMTA0XV0+PC9CQVNFX1BBVE
g+PFRZUEU+MDwvVFlQRT48RElTS19UWVBFPjA8L0RJU0tfVFlQRT48U1RBVEU+MDwvU1RBVEU+PENMVVNURVJTPjxJRD4wPC9JRD48L0NMVVNURVJTPjxUT1RBTF9NQj40NTczNzU1NjwvVE9UQUxfTUI+PEZSRUVfTUI+ND
U1MDc5ODQ8L0ZSRUVfTUI+PFVTRURfTUI+MjI5NTcyPC9VU0VEX01CPjxJTUFHRVM+PElEPjE3PC9JRD48L0lNQUdFUz48VEVNUExBVEU+PEFMTE9XX09SUEhBTlM+PCFbQ0RBVEFbTk9dXT48L0FMTE9XX09SUEhBTlM+PE
NMT05FX1RBUkdFVD48IVtDREFUQVtTWVNURU1dXT48L0NMT05FX1RBUkdFVD48RElTS19UWVBFPjwhW0NEQVRBW0ZJTEVdXT48L0RJU0tfVFlQRT48RFJJVkVSPjwhW0NEQVRBW3Fjb3cyXV0+PC9EUklWRVI+PERTX01BRD
48IVtDREFUQVtmc11dPjwvRFNfTUFEPjxMTl9UQVJHRVQ+PCFbQ0RBVEFbTk9ORV1dPjwvTE5fVEFSR0VUPjxSRVNUUklDVEVEX0RJUlM+PCFbQ0RBVEFbL11dPjwvUkVTVFJJQ1RFRF9ESVJTPjxTQUZFX0RJUlM+PCFbQ0
RBVEFbL3Zhci90bXBdXT48L1NBRkVfRElSUz48VE1fTUFEPjwhW0NEQVRBW3Fjb3cyXV0+PC9UTV9NQUQ+PFRZUEU+PCFbQ0RBVEFbSU1BR0VfRFNdXT48L1RZUEU+PC9URU1QTEFURT48L0RBVEFTVE9SRT48L0RTX0RSSV
ZFUl9BQ1RJT05fREFUQT4= 16
Tue Mar 6 15:08:37 2018 [Z0][ImM][E]: stat: Cannot determine size for /var/tmp/5349048320-TMPL-TP-Xubuntu-1604-DEqcow2
Tue Mar 6 15:08:37 2018 [Z0][ImM][I]: ExitCode: 255
Tue Mar 6 15:08:37 2018 [Z0][ReM][E]: Req:976 UID:0 one.image.allocate result FAILURE [one.image.allocate] Cannot parse image SIZE:
Tue Mar 6 15:08:41 2018 [Z0][MKP][D]: Monitoring marketplace OpenNebula Public (0)
I am Using qcow2 DS and it is properly monitored