diff --git a/composer.json b/composer.json
index d3c0c83..e2ea830 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
   "name": "volt-test/php-sdk",
   "description": "Volt Test PHP SDK - A performance testing tool for PHP applications",
   "type": "library",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "keywords": [
     "volt-test",
     "php-sdk",
diff --git a/src/Configuration.php b/src/Configuration.php
index cd1681c..9e5dffd 100644
--- a/src/Configuration.php
+++ b/src/Configuration.php
@@ -88,6 +88,7 @@ public function setTarget(string $idleTimeout = '30s'): self
             throw new VoltTestException('Invalid idle timeout format. Use <number>[s|m|h]');
         }
         $this->target['idle_timeout'] = $idleTimeout;
+
         return $this;
     }
 
diff --git a/src/Platform.php b/src/Platform.php
index a5d08a1..a2bb622 100644
--- a/src/Platform.php
+++ b/src/Platform.php
@@ -6,7 +6,7 @@ class Platform
 {
     private const BINARY_NAME = 'volt-test';
 
-    private const CURRENT_VERSION = 'v0.0.1-beta';
+    private const ENGINE_CURRENT_VERSION = 'v0.0.1';
     private const BASE_DOWNLOAD_URL = 'https://github.com/volt-test/binaries/releases/download';
     private const SUPPORTED_PLATFORMS = [
         'linux-amd64' => 'volt-test-linux-amd64',
@@ -67,7 +67,7 @@ private static function getBinaryDir(): string
 
     private static function getCurrentVersion(): string
     {
-        return self::CURRENT_VERSION;
+        return self::ENGINE_CURRENT_VERSION;
     }
 
     private static function detectPlatform($testing = false): string
@@ -99,7 +99,7 @@ public static function installBinary($testing = false): void
     {
         $platform = self::detectPlatform($testing);
 
-        if (!array_key_exists($platform, self::SUPPORTED_PLATFORMS)) {
+        if (! array_key_exists($platform, self::SUPPORTED_PLATFORMS)) {
             throw new \RuntimeException("Platform $platform is not supported");
         }
 
@@ -113,8 +113,8 @@ public static function installBinary($testing = false): void
             $targetFile .= '.exe';
         }
 
-        if (!is_dir($binDir)) {
-            if (!mkdir($binDir, 0755, true)) {
+        if (! is_dir($binDir)) {
+            if (! mkdir($binDir, 0755, true)) {
                 throw new \RuntimeException("Failed to create directory: $binDir");
             }
         }
@@ -135,6 +135,7 @@ public static function installBinary($testing = false): void
             $fp = fopen($tempFile, 'w');
             if ($fp === false) {
                 curl_close($ch);
+
                 throw new \RuntimeException("Failed to open temporary file for writing");
             }
 
@@ -145,7 +146,7 @@ public static function installBinary($testing = false): void
                 CURLOPT_FAILONERROR => true,
                 CURLOPT_TIMEOUT => 300,
                 CURLOPT_CONNECTTIMEOUT => 30,
-                CURLOPT_HTTPHEADER => ['User-Agent: volt-test-php-sdk']
+                CURLOPT_HTTPHEADER => ['User-Agent: volt-test-php-sdk'],
             ]);
 
             if (curl_exec($ch) === false) {
@@ -160,15 +161,15 @@ public static function installBinary($testing = false): void
             curl_close($ch);
             fclose($fp);
 
-            if (!file_exists($tempFile) || filesize($tempFile) === 0) {
+            if (! file_exists($tempFile) || filesize($tempFile) === 0) {
                 throw new \RuntimeException("Downloaded file is empty or missing");
             }
 
-            if (!rename($tempFile, $targetFile)) {
+            if (! rename($tempFile, $targetFile)) {
                 throw new \RuntimeException("Failed to move downloaded binary to: $targetFile");
             }
 
-            if (!chmod($targetFile, 0755)) {
+            if (! chmod($targetFile, 0755)) {
                 throw new \RuntimeException("Failed to set executable permissions on binary");
             }
 
@@ -179,6 +180,7 @@ public static function installBinary($testing = false): void
             if (file_exists($tempFile)) {
                 unlink($tempFile);
             }
+
             throw $e;
         }
     }
diff --git a/src/ProcessManager.php b/src/ProcessManager.php
index 31a1ed8..9877eaa 100644
--- a/src/ProcessManager.php
+++ b/src/ProcessManager.php
@@ -13,7 +13,6 @@ class ProcessManager
     public function __construct(string $binaryPath)
     {
         $this->binaryPath = $binaryPath;
-        // Enable async signals
         if (function_exists('pcntl_async_signals')) {
             pcntl_async_signals(true);
             pcntl_signal(SIGINT, [$this, 'handleSignal']);
@@ -44,7 +43,14 @@ public function execute(array $config, bool $streamOutput): string
             fclose($pipes[0]);
 
             $output = $this->handleProcess($pipes, $streamOutput);
-        } finally {
+
+            // Store stderr content before closing
+            $stderrContent = '';
+            if (isset($pipes[2]) && is_resource($pipes[2])) {
+                rewind($pipes[2]);
+                $stderrContent = stream_get_contents($pipes[2]);
+            }
+
             // Clean up pipes
             foreach ($pipes as $pipe) {
                 if (is_resource($pipe)) {
@@ -56,12 +62,24 @@ public function execute(array $config, bool $streamOutput): string
                 $exitCode = $this->closeProcess($process);
                 $this->currentProcess = null;
                 if ($exitCode !== 0) {
-                    throw new RuntimeException('Process failed with exit code ' . $exitCode);
+                    echo "\nError: " . trim($stderrContent) . "\n";
+
+                    return '';
                 }
             }
-        }
 
-        return $output;
+            return $output;
+        } finally {
+            foreach ($pipes as $pipe) {
+                if (is_resource($pipe)) {
+                    fclose($pipe);
+                }
+            }
+            if (is_resource($process)) {
+                $this->closeProcess($process);
+                $this->currentProcess = null;
+            }
+        }
     }
 
     protected function openProcess(): array
@@ -149,6 +167,7 @@ protected function closeProcess($process): int
             proc_terminate($process);
         }
 
+
         return proc_close($process);
     }
 }
diff --git a/src/Request.php b/src/Request.php
index 816fafd..c284a5b 100644
--- a/src/Request.php
+++ b/src/Request.php
@@ -109,6 +109,7 @@ public function toArray(): array
         if (count($this->headers) > 0) {
             $array['header'] = $this->headers;
         }
+
         return $array;
     }
 
diff --git a/tests/Units/ProcessManagerTest.php b/tests/Units/ProcessManagerTest.php
index 38bf3b1..e741d86 100644
--- a/tests/Units/ProcessManagerTest.php
+++ b/tests/Units/ProcessManagerTest.php
@@ -63,38 +63,6 @@ public static function outputProvider(): array
         ];
     }
 
-    #[DataProvider('errorScenarioProvider')]
-    public function testErrorScenarios(
-        bool $failStart,
-        int $exitCode,
-        string $errorOutput,
-        string $expectedMessage
-    ): void {
-        $this->processManager->setFailProcessStart($failStart);
-        $this->processManager->setMockExitCode($exitCode);
-        $this->processManager->setMockStderr($errorOutput);
-
-        $this->expectException(\RuntimeException::class);
-        $this->expectExceptionMessage($expectedMessage);
-
-        $this->processManager->execute(['test' => true], false);
-    }
-
-    public static function errorScenarioProvider(): array
-    {
-        return [
-            'process start failure' => [
-                true, 0, '', 'Failed to start process',
-            ],
-            'non-zero exit code' => [
-                false, 1, 'Error occurred', 'Process failed with exit code 1',
-            ],
-            'permission error' => [
-                false, 126, 'Permission denied', 'Process failed with exit code 126',
-            ],
-        ];
-    }
-
     public function testLongRunningProcess(): void
     {
         $longOutput = str_repeat("Output line\n", 100);