diff --git a/build/_offline.lua b/build/_offline.lua
index b8deeb4..52b119c 100644
--- a/build/_offline.lua
+++ b/build/_offline.lua
@@ -87,6 +87,7 @@ local function write_files(files, path)
     end
 end
 
+-- write installation manifiest and offline install manager
 local function write_install()
     local handle = fs.open("install_manifest.json", "w")
     handle.write(b64_decode(install_manifest))
@@ -103,7 +104,7 @@ lgray()
 write_files(app_files, "/")
 write_files(dep_files, "/")
 
--- write a install manifest and offline installer
+-- write an install manifest and the offline installer
 write_install()
 
 green()
diff --git a/build/bundle.py b/build/bundle.py
index f45f2ab..3894044 100644
--- a/build/bundle.py
+++ b/build/bundle.py
@@ -7,7 +7,7 @@ import sys
 path_prefix = "./_minified/"
 
 # get git build info
-build = subprocess.check_output(["git", "describe", "--tags"]).strip().decode("utf-8")
+build = subprocess.check_output(["git", "describe", "--tags"]).strip().decode('UTF-8')
 
 # list files in a directory
 def list_files(path):
@@ -110,7 +110,7 @@ manifest = {
         "coordinator" : list_files("./coordinator"),
         "pocket" : list_files("./pocket"),
     },
-    "depends" : [ "system", "scada-common", "graphics", "lockbox" ],
+    "depends" : [ "system", "scada-common", "graphics", "lockbox" ]
 }
 
 # write the application installation items as Lua tables
diff --git a/build/ccmsim.lua b/build/ccmsim.lua
index a265076..d311a7c 100644
--- a/build/ccmsim.lua
+++ b/build/ccmsim.lua
@@ -132,7 +132,7 @@ if #opts == 0 or opts[1] == "help" then
     println(" check     - check your installed versions")
     println(" update-rm - delete everything except the config,")
     println("             so that you can upload files for a")
-    println("             new two-file/off-line update")
+    println("             new two-file off-line update")
     println(" uninstall - delete all app files and config")
     return
 else
@@ -144,7 +144,6 @@ else
 end
 
 -- run selected mode
-
 if mode == "check" then
     local local_ok, manifest = read_local_manifest()
     if not local_ok then
diff --git a/build/imgen.py b/build/imgen.py
index 265f786..a854b1f 100644
--- a/build/imgen.py
+++ b/build/imgen.py
@@ -44,11 +44,9 @@ def get_version(path, is_lib = False):
 
 # generate installation manifest object
 def make_manifest(size):
-    os.chdir('./_minified')
-
     manifest = {
         "versions" : {
-            "installer" : get_version("../ccmsi.lua"),
+            "installer" : get_version("./ccmsi.lua"),
             "bootloader" : get_version("./startup.lua"),
             "common" : get_version("./scada-common/util.lua", True),
             "comms" : get_version("./scada-common/comms.lua", True),
@@ -97,8 +95,6 @@ def make_manifest(size):
         }
     }
 
-    os.chdir('../')
-
     return manifest
 
 # write initial manifest with placeholder size
diff --git a/ccmsi.lua b/ccmsi.lua
index b056a9f..bc91112 100644
--- a/ccmsi.lua
+++ b/ccmsi.lua
@@ -160,7 +160,7 @@ local function _clean_dir(dir, tree)
         if fs.isDir(path) then
             _clean_dir(path, tree[val])
             if #fs.list(path) == 0 then fs.delete(path);println("deleted "..path) end
-        elseif (not _in_array(val, tree)) and (val ~= "config.lua" ) then ---@todo delete on full release
+        elseif (not _in_array(val, tree)) and (val ~= "config.lua" ) then ---@todo remove config.lua on full release
             fs.delete(path)
             println("deleted "..path)
         end
@@ -249,7 +249,6 @@ else
 end
 
 -- run selected mode
-
 if mode == "check" then
     local ok, manifest = get_remote_manifest()
     if not ok then return end