diff --git a/makeshift_testing.py b/makeshift_testing.py
index 63d429a..08fe5b1 100755
--- a/makeshift_testing.py
+++ b/makeshift_testing.py
@@ -12,9 +12,9 @@ def make_random_file():
 def sanity_check_format(format: str):
 	make_random_file()
 	md5sum = hashlib.md5(open('test-file', 'rb').read()).hexdigest()
-	os.system(f"cargo run -- -i test-file -o test-file.{format}")
+	os.system(f"cargo run -- compress test-file test-file.{format}")
 	os.remove('test-file')
-	os.system(f"cargo run -- -i test-file.{format}")
+	os.system(f"cargo run -- test-file.{format}")
 	if md5sum != hashlib.md5(open('test-file', 'rb').read()).hexdigest():
 		print("Something went wrong with tar (de)compression.")
 		os._exit(2)
@@ -81,16 +81,16 @@ if __name__ == "__main__":
 			print(f"Failed while decompressing {file}")		
 			os._exit(2)
 
-	# os.chdir("..")
-	# os.system("rm -rf testbuilds")
+	os.chdir("..")
+	os.system("rm -rf testbuilds")
 
-	# # We'll now verify if ouch is not altering the data it is compressing
-	# # and decompressing
+	# We'll now verify if ouch is not altering the data it is compressing
+	# and decompressing
 
-	# sanity_check_format("zip")
-	# sanity_check_format("tar")
-	# sanity_check_format("tar.gz")
-	# sanity_check_format("tar.bz")
-	# sanity_check_format("tar.bz2")
-	# sanity_check_format("tar.lz")
-	# sanity_check_format("tar.lzma")
\ No newline at end of file
+	sanity_check_format("zip")
+	sanity_check_format("tar")
+	sanity_check_format("tar.gz")
+	sanity_check_format("tar.bz")
+	sanity_check_format("tar.bz2")
+	sanity_check_format("tar.lz")
+	sanity_check_format("tar.lzma")
\ No newline at end of file
diff --git a/src/evaluator.rs b/src/evaluator.rs
index a4986b6..8d01625 100644
--- a/src/evaluator.rs
+++ b/src/evaluator.rs
@@ -19,7 +19,8 @@ use crate::{
     dialogs::Confirmation, 
     extension::{CompressionFormat, Extension}, 
     file::File, 
-    utils
+    utils,
+    debug
 };
 
 pub struct Evaluator {}
@@ -213,7 +214,7 @@ impl Evaluator {
         output: Option<&Path>,
         flags: &oof::Flags,
     ) -> crate::Result<()> {        
-        let file = File::from(file_path)?;
+        let file = debug!(File::from(file_path)?);
         let output = match output {
             Some(inner) => Some(File::from(inner)?),
             None => None,
diff --git a/src/extension.rs b/src/extension.rs
index f8a4029..bb23dc8 100644
--- a/src/extension.rs
+++ b/src/extension.rs
@@ -7,7 +7,7 @@ use std::{
 
 use CompressionFormat::*;
 
-use crate::utils::to_utf;
+use crate::{debug, utils::to_utf};
 
 /// Represents the extension of a file, but only really caring about
 /// compression formats (and .tar).
diff --git a/src/file.rs b/src/file.rs
index 56d2c26..bf29016 100644
--- a/src/file.rs
+++ b/src/file.rs
@@ -19,13 +19,12 @@ pub struct File<'a> {
 
 impl<'a> File<'a> {
     pub fn from(path: &'a Path) -> crate::Result<Self> {
-        let extension = Extension::from(path.as_ref())?;
-        eprintln!("dev warning: Should we really ignore the errors from the convertion above?");
+        let extension = Extension::from(path.as_ref()).ok();
 
         Ok(File {
             path,
             contents_in_memory: None,
-            extension: Some(extension),
+            extension
         })
     }
 }