debug.log from the bay shows the part group enumerates fine (14 .geop files
opened), then goCMM connects to PC-DMIS over COM and throws:
System.ArgumentNullException: Value cannot be null. Parameter name: type
at System.Activator.CreateInstance(Type type)
at GEAE.Common.CMM.CMMInterfaces.PCDMIS.PCDMIS.<ConnectToSoftware>b__43_0()
-> System.NullReferenceException at ConnectToSoftware(...)
Root cause: PC-DMIS automation server is not COM-registered, so
Type.GetTypeFromProgID returns null -> CreateInstance(null) throws -> the NRE
is the downstream symptom. Not part-group, not permissions, not calibration.
- PROBE 4: pull the .NET Runtime / Application Error crash stack for goCMM from
the Application log so the next run captures the null in one shot.
- PROBE 5: (a) part-group UNC reachability; (b) PC-DMIS COM registration check
(PCDLRN.* ProgID -> CLSID -> LocalServer32) that names the missing registration
and the Pcdlrn.exe /regserver fix; plus install presence for context.
- .bat header documents the COM root cause.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
goCMM matches the registry 'Selected Part Group' against the
ApplicationSettings.xml <PartGroup FullName> entries with a case-sensitive
compare. No match -> SelectedPartGroup null -> "Object reference not set to
an instance of an object" at start. This is a different failure from the
registry SecurityException the script already probes.
- PROBE 3: read the reg value (32-bit view) + every FullName in the XML,
Ordinal-compare, and report exact / case-only / no-match / missing-XML.
Case-only and no-match name the d441abd canonicalization fix as the remedy.
- Version check now looks for the real goCMM.exe, not the nonexistent
GEAOperatorFriendlyInterface.exe (was a false MISSING).
- .bat header documents both failure modes it now diagnoses.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
goCMM settings live in two places: 3 pointer values at
HKLM\SOFTWARE\WOW6432Node\General Electric\goCMM, and the real content of all
7 Settings tabs (PC-DMIS, Quindos, Modus, Machine Definition, User Input,
Notifications, Part Groups) in C:\geaofi\ApplicationSettings.xml. Capture-replay
pair, mirroring the Wax/Trace Backup/Install scripts:
- Backup-goCMMSettings.ps1/.bat: on a live legacy bay (admin), zips the registry
key + the C:\geaofi tree (minus transient LocalProgramCopies/logs) to
gocmm_backup_<PC>_<ts>.zip.
- Install-goCMMSettings.ps1/.bat: restore at imaging (admin). Imports the key +
lays down C:\geaofi, then grants BUILTIN\Users WriteKey on the reg key and
Modify on C:\geaofi - goCMM's RegistrySettings.GetRegistryString opens the key
with writable:true even to READ, so a locked-down operator throws a
SecurityException without the grant (the post-lockdown 'registry access not
allowed' error). Applies a built-in legacy->new FQDN rewrite
(rd.ds.ge.com -> wjs.geaerospace.net) automatically across the registry values
and ApplicationSettings.xml (incl PartGroup FullName); -NoDefaultRewrite skips
it, /replace adds an extra pair, -SelectedPartGroup overrides per bay.
- gocmm-debug.ps1/.bat: run as the operator to reproduce the SecurityException
and dump the goCMM key ACL (confirms whether lockdown stripped the grant).
All round-trip + FQDN-rewrite verified on the win11 VM. NOTE: covers goCMM only;
PC-DMIS probe calibrations / custom tip angles / machine comp are owned by
PC-DMIS (Hexagon) and not captured here. Not yet wired into 09-Setup-CMM
auto-discovery.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
