Error 1498 At Build Properties Window

[FKhueson]

Hi, I'm having a problem resolving error 1498 (LV2024 Q3 32-bit 24.3.2f2). So far previous forum posts on the topic have not quite matched this particular flavor of 1498. I have a project for a RPi, where when right clicking my Real-Time Application build spec and selecting properties I get the following error:

Error 1498 occurred at Get LV Class Default Value.vi

Possible reason(s):

LabVIEW: (Hex 0x5DA) Library has errors. Fix the errors before attempting this operation.

Complete call chain:
Get LV Class Default Value.vi
AB_Load_Class.vi
AB_Build.lvclass:Load_Build_Type.vi
AB_Build.lvclass:Load_from_Project.vi
AB_UI_Frmwk_Build.lvclass:Initialize.vi
AB_UI_Initialize_Framework.vi
AB_UI_FRAMEWORK_NEW.vi
AB_Item_OnDoProperties.vi
AB_Item_OnDoProperties.vi.ProxyCaller

LabVIEW attempted to load the class at this path:
C:\Program Files (x86)\National Instruments\LabVIEW 2024\vi.lib\AppBuilder\AB_Classes\RTEXE\AB_RTEXE.lvclass

After closing the project and opening up another project that would normally not have this problem (for a PC build spec, not RT), I right click the build spec and select "properties" and get the following error:

Error 1498 occurred at Get LV Class Default Value.vi

Possible reason(s):

LabVIEW: (Hex 0x5DA) Library has errors. Fix the errors before attempting this operation.

Complete call chain:
Get LV Class Default Value.vi
AB_UI_Initialize_Framework.vi
AB_UI_FRAMEWORK_NEW.vi
AB_Item_OnDoProperties.vi
AB_Item_OnDoProperties.vi.ProxyCaller

LabVIEW attempted to load the class at this path:
C:\Program Files (x86)\National Instruments\LabVIEW 2024\vi.lib\AppBuilder\AB_Classes\Build\UI\AB_UI_Frmwk_Build.lvclass

Reopening the first RPi project and performing the same properties selection would now result in the second error 1498. After closing and reopening LabVIEW, the PC project build spec would open it's properties window without issue. Closing the PC project and opening the RPi project and going to the build spec properties window from the right click menu would produce the first error, after which the PC project would then produce the second error.

After closing LabVIEW, I opened up the AB_RTEXE.lvclass file and found a few errors:

These VIs are protected, so I can't dig into them to fix whatever happened. I had performed a repair in NIPM of "LabVIEW Runtime (32- and 64-bit) 2024 Q3 Patch 2" but the problem persists. This problem seems to happen on two computers (project is shared over OneDrive) with the same version LabVIEW installations, which is very weird to me.

Any advice on how to proceed? Is there a way to fix the broken files? Thanks!

[avogadro5]

---

I had performed a repair in NIPM of "LabVIEW Runtime (32- and 64-bit) 2024 Q3 Patch 2" but the problem persists.

---

The issue is in the development environment so you'd need to repair "LabVIEW" not just "LabVIEW Runtime"

[FKhueson]

After a lot of trying, the error still persists. What I've done:

• Performed repair on just the above mentioned packages. Asked to reboot, no luck.
• Performed repair on all packages, about 30 packages will not repair after two attempts.
• Tried uninstalling and reinstalling since packages would not repair, same error.
• Performed repair on just the above mentioned packages. Asked to reboot, no luck again.

It seems like there's a problem installing LabVIEW since this persisted after a new install. This happens with multiple separate projects involving a RT build spec, so it doesn't seem project specific.

[FKhueson]

Additional efforts:

• Tried uninstalling and deleting local files (https://forums.ni.com/t5/LabVIEW/LabVIEW-not-uninstalling-cleanly-can-I-delete-manually/m-p/4021570/...). Did not delete the NI Package Manager folder.
• Deleted document files shared in OneDrive. It seemed between my laptop and desktop there were labview files synced through OneDrive, figured something could be carrying over between platforms during installation.
• Installed OpenG, STM, LINX through VIPM
• Created new project with RPi target, after right clicking Build Specifications, New -> Real-Time Application i get the first error related to AB_RTEXE.lvclass. I haven't opened any other previous projects before this.

I'm sort of at a loss as to where else to go, this was working just prior to a power outage where I lost contact with a RPi during deployment. How could that have caused this?

[Mads]

Did you ever get this fixed? I just ran into the same issue but with LabVIEW 2025...

[FKhueson]

I ultimately found that this was due to using a version of linx toolkit which is no longer supported, and is now the hobbyist toolkit.

[Mads]

Thanks...I repaired both LabVIEW and RT...and removed Linx just in case, and it fixed the problem.