Why doesn't clicking the SPH or VAB take me to it

[somekspjet]

When I thought it was loading, I just kept waiting, then I realized there was a problem. How could i fix this? 

TIA

[Superfluous J]

Workaround, you may be able to use the icons on the side of the screen instead of the buildings themselves.

I remember having this issue a LONG time ago and it was a mod that caused it. No clue what mod that was or if it's causing it now for you, but you could do the old bifurcated search to see if it's a mod causing it.

Uninstall/disable half of your mods and load the game to see if it works or not. If it works, one of those mods caused it. If it's still broken, try loading the game with the OTHER mods and see if one of them is causing it. Then, using the set of mods where it was still broken, repeat the process by disabling half of them. Repeat until you're down to a single mod causing the issue. It sounds daunting but it's not. 100 mods takes like 8 iterations.