| Symptom | Cause/Solution |
| Installation difficulties | Check you have all the required libraries, etc. |
| and that you have edited the build script | |
| to point to your local versions. If you don't have | |
| Qt, then build with the no-Qt option. | |
| If you have not done so already, try to rebuild the | |
| libqlapack, libqblas and libqdos | |
| sharable libraries. | |
| Cannot get data sequence | No data within time requested, check command log |
| to see what PEACE's operating mode was. Note, if there | |
| is no EFW data, a manual value of potential can be used; | |
| also if there is no FGM data, the anisotropy will not | |
| be estimated. | |
| Error separating | Errant time-tag within series. Although QTMC |
| overlap moments | filters out misplaced time-tags, it is possible that the |
| occasional one will slip through. Try adjusting the data | |
| interval slightly. | |
| Main calculation failure | Exception encountered while in the main loop. |
| Input error | Invalid input field. Common problems are: mixing of L1L2 |
| and H1H2 moments, and Invalid time entries. Note that the | |
| end time must be at least 10 seconds ahead of the start | |
| time. Times must be entered in the correct ISO format (see | |
| above). | |
| Promotion error | Data is accessed via an external server. If the server is |
| down/inaccessable, then data will not be retrieved, and | |
| the user will be warned. Alternatively if there is insufficient | |
| space left on the disk, promotion will fail. | |
| Join error | See `Error separating overlap moments' |
| Nil sequence | For whatever reason, a data sequence with no entries has |
| been created. This will inevitably cause a problem somewhere | |
| in the calculation, so an error is returned when this | |
| situation arises. | |
| Failed to create | Insufficient memory to accomodate output series. |
| output sequence | |
| File read/write error | Check you have the necessary permissions to read the |
| calibration files and write data to the disk. | |
| No anisotropy? | If the FGM data is not available, then no anisotropy |
| estimation will be made. The other outputs are unaffected. | |
| A message indicating that no anisotropy will be output is | |
| printed to the console. | |
| Potential not what | Again, if the EFW data is unavailable, then QTMC will use |
| I was expecting! | a default value (which you can control, but initially set to 7 V). |
| This information is again conveyed by the console. |