QSWAT+ Error: 'GlobalVars' is not defined; (likewise '''AboutQSWAT' & "Parameters" are not defined)

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Bill Capehart

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Mar 31, 2026, 12:23:21 AM (4 days ago) Mar 31

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Hello All: I am getting the following GlobalVars Error when creating a QSWAT+ v3.1.2 project. A similar error occurs when I load in a Qswat project file from earlier Qswat+ versions. Additionally, I get similar errors when pushing the "About QSwat" button and "Parameters" button. Otherwise I am frozen out of the QSwat Opening Dialog Box.

I am running this on the QGIS Desktop 3.44.8 LTR, running on a Parallels Windows emulator under MacOS 26.4 (Tahoe). I installed QSWAT+ with the swatplus-windows-installer-3.1.4.zip

Full Logs are Below.

#####################################

# Versions

QSWAT+ 3.1.2

QGIS Desktop 3.44.8

Parallels Desktop for Mac Pro Edition 26.3.0 (57392)

#####################################

# Stacktrace LOG

Version:1.0 StartHTML:0000000107 EndHTML:0000005414 StartFragment:0000000538 EndFragment:0000005372

An error has occurred while executing Python code:

NameError: name 'GlobalVars' is not defined

Traceback (most recent call last):

File "C:\Users/wjc/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus\QSWATPlus\QSWATPlusMain.py", line 311, in newProject

self.setupProject(proj, False)

File "C:\Users/wjc/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus\QSWATPlus\QSWATPlusMain.py", line 351, in setupProject

self._gv = GlobalVars(self._iface, QSWATPlus.__version__, self.plugin_dir, isBatch, isHUC, isHAWQS, logFile)

^^^^^^^^^^

NameError: name 'GlobalVars' is not defined

Python version: 3.12.13 (main, Mar 5 2026, 15:14:54) [MSC v.1944 64 bit (AMD64)]
QGIS version: 3.44.8-Solothurn Solothurn, d25052deb8b

Python Path:

C:/PROGRA~1/QGIS34~1.8/apps/qgis-ltr/./python
C:/Users/wjc/AppData/Roaming/QGIS/QGIS3\profiles\default/python
C:/Users/wjc/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins
C:/PROGRA~1/QGIS34~1.8/apps/qgis-ltr/./python/plugins
C:\PROGRA~1\QGIS34~1.8\apps\grass\grass84\etc\python
C:\Users\wjc\Documents
C:\Program Files\QGIS 3.44.8\bin\python312.zip
C:\PROGRA~1\QGIS34~1.8\apps\Python312\DLLs
C:\PROGRA~1\QGIS34~1.8\apps\Python312\Lib
C:\Program Files\QGIS 3.44.8\bin
C:\PROGRA~1\QGIS34~1.8\apps\Python312
C:\PROGRA~1\QGIS34~1.8\apps\Python312\Lib\site-packages
C:\PROGRA~1\QGIS34~1.8\apps\Python312\Lib\site-packages\win32
C:\PROGRA~1\QGIS34~1.8\apps\Python312\Lib\site-packages\win32\lib
C:\PROGRA~1\QGIS34~1.8\apps\Python312\Lib\site-packages\Pythonwin
C:/Users/wjc/AppData/Roaming/QGIS/QGIS3\profiles\default/python
C:\Users/wjc/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus\QSWATPlus

#####################################

# QSWAT+ LOG

Version:1.0 StartHTML:0000000107 EndHTML:0000002964 StartFragment:0000000538 EndFragment:0000002928

2026-03-30T21:00:23 INFO QSWAT+ failed to import HRUs: Traceback (most recent call last):
File "C:\Users/wjc/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus\QSWATPlus\QSWATPlusMain.py", line 55, in <module>
from .hrus import HRUs
File "C:\PROGRA~1/QGIS34~1.8/apps/qgis-ltr/./python\qgis\utils.py", line 1100, in _import
mod = _builtin_import(name, globals, locals, fromlist, level)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users/wjc/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus\QSWATPlus\hrus.py", line 50, in <module>
from .polygonizeInC2 import Polygonize # type: ignore # @UnresolvedImport
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\PROGRA~1/QGIS34~1.8/apps/qgis-ltr/./python\qgis\utils.py", line 1100, in _import
mod = _builtin_import(name, globals, locals, fromlist, level)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "polygonizeInC2.pyx", line 1, in init QSWATPlus.polygonizeInC2
ValueError: numpy.dtype size changed, may indicate binary incompatibility. Expected 96 from C header, got 88 from PyObject

2026-03-30T21:00:23 INFO QGIS version: 3.44.8-Solothurn; QSWAT+ version: 3.1.2

2026-03-30T21:04:27 INFO Project file is C:/Users/wjc/Documents/QSWAT_MODELS\QSWAT_RR_2026\QSWAT_RR_2026.qgs

2026-03-30T21:04:29 INFO Project file is C:/Users/wjc/Documents/QSWAT_MODELS/QSWAT_RR_2026/QSWAT_RR_2026.qgs

#####################################

# General LOG

Version:1.0 StartHTML:0000000107 EndHTML:0000001660 StartFragment:0000000538 EndFragment:0000001624

2026-03-30T21:00:26 INFO QgsApplication state:
- QGIS_PREFIX_PATH env var: C:/PROGRA~1/QGIS34~1.8/apps/qgis-ltr
- Prefix: C:/PROGRA~1/QGIS34~1.8/apps/qgis-ltr
- Plugin Path: C:/PROGRA~1/QGIS34~1.8/apps/qgis-ltr/plugins
- Package Data Path: C:/PROGRA~1/QGIS34~1.8/apps/qgis-ltr/.
- Active Theme Name: default
- Active Theme Path: C:/PROGRA~1/QGIS34~1.8/apps/qgis-ltr/./resources/themes\default\icons/
- Default Theme Path: :/images/themes/default/
- SVG Search Paths: C:/PROGRA~1/QGIS34~1.8/apps/qgis-ltr/./svg/
C:/Users/wjc/AppData/Roaming/QGIS/QGIS3\profiles\default/svg/
- User DB Path: C:/PROGRA~1/QGIS34~1.8/apps/qgis-ltr/./resources/qgis.db
- Auth DB Path: QSQLITE://C:/Users/wjc/AppData/Roaming/QGIS/QGIS3\profiles\default/qgis-auth.db

#####################################

# Python Error LOG

Version:1.0 StartHTML:0000000107 EndHTML:0000001366 StartFragment:0000000538 EndFragment:0000001330

2026-03-30T21:04:29 WARNING Traceback (most recent call last):
File "C:\Users/wjc/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus\QSWATPlus\QSWATPlusMain.py", line 311, in newProject
self.setupProject(proj, False)
File "C:\Users/wjc/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus\QSWATPlus\QSWATPlusMain.py", line 351, in setupProject
self._gv = GlobalVars(self._iface, QSWATPlus.__version__, self.plugin_dir, isBatch, isHUC, isHAWQS, logFile)
^^^^^^^^^^
NameError: name 'GlobalVars' is not defined

Version:1.0 StartHTML:0000000107 EndHTML:0000001644 StartFragment:0000000538 EndFragment:0000001608

2026-03-30T21:45:25 WARNING Traceback (most recent call last):
File "C:\Users/wjc/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus\QSWATPlus\QSWATPlusMain.py", line 394, in runParams
params = Parameters(self._gv)
^^^^^^^^^^
NameError: name 'Parameters' is not defined

2026-03-30T21:46:11 WARNING Traceback (most recent call last):
File "C:\Users/wjc/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus\QSWATPlus\QSWATPlusMain.py", line 233, in about
form = AboutQSWAT(self._gv)
^^^^^^^^^^
NameError: name 'AboutQSWAT' is not defined

#####################################

# Messages LOG

Version:1.0 StartHTML:0000000107 EndHTML:0000000766 StartFragment:0000000538 EndFragment:0000000730

2026-03-30T21:04:29 WARNING Python error : An error has occurred while executing Python code: See message log (Python Error) for more details.

#####################################

Please advise, and much obliged,

Bill Capehart

SD Mines.

Chris George

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Mar 31, 2026, 4:25:56 PM (4 days ago) Mar 31

to Bill Capehart, QSWAT+

The problrm is that QGIS 3.44 uses a different version of numpy. Try the leatest QSWAT+ 3.2.1 https://github.com/swat-model/QSWATPlus/releases/tag/v3.2.1

Chris

On 31/03/2026 05:09, 'Bill Capehart' via QSWAT+ wrote:

Hello All: I am getting the following GlobalVars Error when creating a QSWAT+ v3. 1. 2 project. A similar error occurs when I load in a Qswat project file from earlier Qswat+ versions. Additionally, I get similar errors when pushing the "About

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