diff --git a/gpgtool b/gpgtool
index 945c361..93a8b71 100755
--- a/gpgtool
+++ b/gpgtool
@@ -86,16 +86,13 @@ EOF
 
 # Cleans up GPGtool. Clears the temp directory and closes the mounted volume.
 clear () {
-  # Abort if not currently initialized:
-  [[ ! -f "${_tempdir}" ]] && echo "GPGtool not currently initialized, aborting …" && exit 1
-
-  local tempdir="$(cat /tmp/gpgtool.tempdir)"
-  source "${tempdir}/env"
+  _checkinit
 
   # Unmount device:
   if [[ ! -z "${mountdev}" ]]; then
     echo "Unmounting ${mountdev} …"
     udisksctl unmount -b "${mountdev}"
+    [[ $? != 0 ]] && echo "Error unmounting ${mountdev}, aborting …" && exit 1
   fi
   # Lock device:
   if [[ "${dev}" != "${mountdev}" ]]; then
@@ -111,11 +108,7 @@ clear () {
 
 # Lists all keys stored in the key path.
 list () {
-  # Abort if not currently initialized:
-  [[ ! -f "${_tempdir}" ]] && echo "GPGtool not currently initialized, aborting …" && exit 1
-
-  local tempdir="$(cat /tmp/gpgtool.tempdir)"
-  source "${tempdir}/env"
+  _checkinit
 
   # Abort if no keys found:
   [[ -z "$(ls ${keypath})" ]] &&
@@ -131,7 +124,7 @@ list () {
 
   if [[ -z "$(ls -l ${_pkdir} | grep ^l)" ]]
   then
-    echo "No open keys. Try \`gpgtool open FINGERPRINT\`."
+    echo "No open keys. Try \`gpgtool open FINGERPRINT [FINGERPRINT …]\`."
   else
     echo "Currently Opened Keys:"
     ls -l ${_pkdir} | grep ^l | awk {'print $NF'}
@@ -143,6 +136,17 @@ usage () {
   echo FIXXME
 }
 
+# Abort if not currently initialized, otherwise load state.
+_checkinit () {
+  [[ ! -f "${_tempdir}" ]] && echo "GPGtool not currently initialized, aborting …" && exit 1
+
+  tempdir="$(cat /tmp/gpgtool.tempdir)"
+
+  [[ ! -f "${tempdir}/env" ]] && \
+    echo "State information missing. Try \`gpgtool clear && gpgtool init\`. Aborting …" && exit 1
+  source "${tempdir}/env"
+}
+
 # Abort for missing dependencies:
 for dep in ${_dependencies}; do
   if ! command -v ${dep} >/dev/null 2>&1; then