KStandardDirs::findExe() is actually a static method.

src/Session.cpp

@@ -365,7 +365,7 @@ QString Session::checkProgram(const QString& program) const
 
     exec = KRun::binaryName(exec, false);
     exec = KShell::tildeExpand(exec);
-    QString pexec = KGlobal::dirs()->findExe(exec);
+    QString pexec = KStandardDirs::findExe(exec);
     if ( pexec.isEmpty() ) 
     {
         kError() << i18n("Could not find binary: ") << exec;

src/SessionController.cpp

@@ -1193,9 +1193,9 @@ void SessionController::sessionStateChanged(int state)
 
 void SessionController::zmodemDownload()
 {
-    QString zmodem = KGlobal::dirs()->findExe("rz");
+    QString zmodem = KStandardDirs::findExe("rz");
     if(zmodem.isEmpty()) {
-       zmodem = KGlobal::dirs()->findExe("lrz");
+       zmodem = KStandardDirs::findExe("lrz");
     }
     if(!zmodem.isEmpty()) {
         const QString path = KFileDialog::getExistingDirectory(
@@ -1224,9 +1224,9 @@ void SessionController::zmodemUpload()
          i18n("<p>The current session already has a ZModem file transfer in progress.</p>"));
       return;
     }
-    QString zmodem = KGlobal::dirs()->findExe("sz");
+    QString zmodem = KStandardDirs::findExe("sz");
     if(zmodem.isEmpty()) {
-       zmodem = KGlobal::dirs()->findExe("lsz");
+       zmodem = KStandardDirs::findExe("lsz");
     }
     if(zmodem.isEmpty()) {
         KMessageBox::sorry(_view,