diff --git a/PHI-CL/data.lua b/PHI-CL/data.lua
index 962e6ed..68f82f5 100644
--- a/PHI-CL/data.lua
+++ b/PHI-CL/data.lua
@@ -28,6 +28,8 @@ end
 
 if mods['space-age'] then
     require 'data.b.sa'
+else
+    error('[PHI-CL][SA] Space Age not detected.')
 end
 
 if mods['space-age'] and (settings.startup['PHI-GM'].value and settings.startup['PHI-GM'].value ~= '') then
diff --git a/PHI-CL/data/b/gm-vp.lua b/PHI-CL/data/b/gm-vp.lua
index 76fd062..78c1d52 100644
--- a/PHI-CL/data/b/gm-vp.lua
+++ b/PHI-CL/data/b/gm-vp.lua
@@ -1,6 +1,7 @@
 local items = require 'config'
 
 if not mods['space-age'] then
+    error('[PHI-CL][SA] Space Age not detected.')
     return
 end