QSWAT + Plugin assistance

[Katlego Mateta]

Hi there,

SWAT+ Issue Report Template

1. Primary Issue Location

• Component: ( QSWAT+)
• Area of impact: (  QSWAT+ plugin  )

2. Software Versions

•  QSWAT+, version 3.2.2  

3. Project Characteristics

• Watershed Details: N/A
• Modeling Aim: water balance ,streamflow dynamics assessment

4. Description of Issue

• The Problem: The QSWAT + plugin wont appear on my QGIS regardless of the QGIS model I am using(3 or 4).I have now installed QGIS 4.0.1but the QSWAT + plugin wont appear at the top though it shows that its installed in the plugin tab.
• Step to Reproduce: I only opend the the QGIS app .

5. Supporting Data (Optional)

Below is the  QGIS messages shown by the bubble icon : 

WARNING    Python error : Couldn't load plugin 'QSWATPlus' due to an error when calling its classFactory() method See message log (Python Error) for more details.

I have also attached images of  the error massages shown by the bubble icon

I am looking forward to the assistance .

Kind regards,

Katlego

[Chris George]

This is very strange. The Python error log shows code that should run
OK. Since you have the error in two versions of QGIS I suggest you
download QSWAT+ again and reinstall it.

Let me know what happens.

Chris

On 5/5/2026 9:07 AM, Katlego Mateta wrote:
> Hi there, SWAT+ Issue Report Template 1. Primary Issue Location
> Component:  ( QSWAT+) Area of impact:  (  QSWAT+ plugin  ) 2. Software

> Versions  QSWAT+, version 3. 2. 2   3. Project Characteristics Watershed

> Details:  N/A Modeling Aim:  water balance

> ZjQcmQRYFpfptBannerStart
> This Message Is From an External Sender
> This message came from outside your organization.
> ZjQcmQRYFpfptBannerEnd
> Hi there,
>
> *SWAT+ Issue Report Template*
>
> *1. Primary Issue Location*
>
> * *Component:* ( QSWAT+)
> * *Area of impact:* (  QSWAT+ plugin  )
>
> *2. Software Versions*
>
> * *QSWAT+, version 3.2.2 *
>
> *3. Project Characteristics*
>
> * *Watershed Details:* N/A
> * *Modeling Aim:* water balance ,streamflow dynamics assessment
>
> *4. Description of Issue*
>
> * *The Problem: *The QSWAT + plugin wont appear on my QGIS regardless

> of the QGIS model I am using(3 or 4).I have now installed QGIS
> 4.0.1but the QSWAT + plugin wont appear at the top though it shows
> that its installed in the plugin tab.

> * *Step to Reproduce:* I only opend the the QGIS app .
>
> *5. Supporting Data (Optional)*
>
> *Below is the * *QGIS **messages shown by the bubble icon : *

>
> WARNING Python error : Couldn't load plugin 'QSWATPlus' due to an error
> when calling its classFactory() method See message log (Python Error)
> for more details.
>
> I have also attached images of  the error massages shown by the bubble icon
>
>
> I am looking forward to the assistance .
>
>
> Kind regards,
>
> Katlego
>

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[Katlego Mateta]

The plugin only appears in QGIS 3 but now the problem is when I try to create a project it says "This project file was created by a newer version of QGIS (3.44.9-Solothurn) and could not be completely loaded."

[Chris George]

In my experience this issue does not cause any problems with QSWAT+ (or
QSWAT) projects. You can ignore it.

Chris

On 5/8/2026 2:31 PM, Katlego Mateta wrote:
> The plugin only appears in QGIS 3 but now the problem is when I try to
> create a project it says "This project file was created by a newer

> version of QGIS (3. 44. 9-Solothurn) and could not be completely

> loaded. " On Tuesday, 5 May 2026 at 14: 12: 30

> <https://urldefense.com/v3/__https://groups.google.com/d/msgid/__;!!
> KwNVnqRv!
> DLbVe_yIqP50V1_LJyq9etZKzshnaW1iHJsvRdVbIgp2nPky0IRh6ByuSkmevwQFIrNsSRi_Qe_yHbZxqQ$>
> > qswatplus/
> f02d6d30-61f2-4308-97a3-6702cb3a222bn%40googlegroups.com <https://
> urldefense.com/v3/__http://40googlegroups.com__;!!KwNVnqRv!
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> > <https://urldefense.com/v3/__https://groups.google.com/d/msgid/
> <https://urldefense.com/v3/__https://groups.google.com/d/msgid/>
> > qswatplus/
> f02d6d30-61f2-4308-97a3-6702cb3a222bn*40googlegroups.com <https://
> urldefense.com/v3/__http://40googlegroups.com__;!!KwNVnqRv!
> DLbVe_yIqP50V1_LJyq9etZKzshnaW1iHJsvRdVbIgp2nPky0IRh6ByuSkmevwQFIrNsSRi_Qe-JklWqew$>?
> > utm_medium=email&utm_source=footer__;JQ!!KwNVnqRv!DKQH3_gZ-
> > Ikd3OsVwnlh6u0KHa-EjLGV4YrZYHW7CO7slknEeGzDgjOuQu-
> iSQm9TWJCZOR0QIM6XIk7yA$>.

>
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