[Qgis-user] QGIS 4 not reading old projects

[qgis.user at raycar.co.uk]

Hi All,

               Some more glitches QGIS 4 (OS is Windows 10 fully up-to-date):

 

“Font “MS Shell Dlg 2” not available on system

 

Layer :: OS_Open_Zoomstack — roads_regional

Labeling”

 

Exactly the same QGIS project opened in 3.44.7 results in no error. I believe “MS Shell Dlg 2” may be “virtual” font which may be part of the problem.

 

A problem that I’m sure I’ve seen before:

“An alternative, ballpark-only transform was used when transforming coordinates between EPSG:4326 - WGS 84 and EPSG:27700 - OSGB36 / British National Grid. The results may not match those obtained by using the preferred operation:

+proj=pipeline +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=hgridshift +grids=uk_os_OSTN15_NTv2_OSGBtoETRS.tif +step +proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 +x_0=400000 +y_0=-100000 +ellps=airy

Possibly an incorrect choice of operation was made for transformations between these reference systems. Check the Project Properties and ensure that the selected transform operations are applicable over the whole extent of the current project.”

 

Again, the problem is not present using exactly the same project in 3.44.7.

 

Any suggestions and/or solutions please? 

 

For my money, I am continuing with QGIS 4 for experimental purposes but sticking to 3.44.7 for “real” work.

 

Regards,

Ray Carpenter.

 

 

From: Pat Brown [mailto:mistyhaven at gmail.com] 
Sent: 16 March 2026 10:05
To: QGIS.USER
Subject: QGIS 4 not reading old projects

 

Hi,

   I have just downloaded QGIS 4 and the problem I am having is that when I try to open any one of my projects that are working fine in version 3,4, the project will not open. The scroll bar says it is loading the project but then it simply goes back to the opening page.

I am running WIN11, 64 bit

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