diff --git a/VERSION b/VERSION
index cf27138..ac3b949 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.2.16
+4.2.17
diff --git a/clients/c/src/un.c b/clients/c/src/un.c
index 360ba3c..7f434b5 100644
--- a/clients/c/src/un.c
+++ b/clients/c/src/un.c
@@ -6013,7 +6013,7 @@ void print_usage(const char *prog) {
  * ============================================================================ */
 
 const char *unsandbox_version(void) {
-    return "4.2.16";
+    return "4.2.17";
 }
 
 const char *unsandbox_detect_language(const char *filename) {
diff --git a/clients/groovy/sync/src/un.groovy b/clients/groovy/sync/src/un.groovy
index 1f2d6ed..7b3e607 100644
--- a/clients/groovy/sync/src/un.groovy
+++ b/clients/groovy/sync/src/un.groovy
@@ -72,7 +72,7 @@
  * </ol>
  *
  * @author Permacomputer Project
- * @version 4.2.16
+ * @version 4.2.17
  */
 
 import javax.crypto.Mac
diff --git a/clients/javascript/async/package.json b/clients/javascript/async/package.json
index 6bfa724..a40e67a 100644
--- a/clients/javascript/async/package.json
+++ b/clients/javascript/async/package.json
@@ -1,6 +1,6 @@
 {
   "name": "un-async",
-  "version": "4.2.16",
+  "version": "4.2.17",
   "description": "Unsandbox async JavaScript SDK - Execute code in 50+ languages",
   "main": "src/un_async.js",
   "type": "module",
diff --git a/clients/javascript/sync/package.json b/clients/javascript/sync/package.json
index b22fea8..7737d3c 100644
--- a/clients/javascript/sync/package.json
+++ b/clients/javascript/sync/package.json
@@ -1,6 +1,6 @@
 {
   "name": "un-sync",
-  "version": "4.2.16",
+  "version": "4.2.17",
   "description": "unsandbox.com JavaScript SDK (Isomorphic - Node.js + Browser)",
   "type": "module",
   "main": "src/un.js",
diff --git a/clients/lua/sync/src/un.lua b/clients/lua/sync/src/un.lua
index 400362f..fe6e5b9 100644
--- a/clients/lua/sync/src/un.lua
+++ b/clients/lua/sync/src/un.lua
@@ -15,7 +15,7 @@ local ltn12 = require("ltn12")
 
 local Un = {}
 Un.API_BASE = "https://api.unsandbox.com"
-Un.VERSION = "4.2.16"
+Un.VERSION = "4.2.17"
 
 -- Credential loading
 function Un.load_accounts_csv(path)
diff --git a/clients/perl/sync/src/un.pl b/clients/perl/sync/src/un.pl
index 9752169..c537364 100644
--- a/clients/perl/sync/src/un.pl
+++ b/clients/perl/sync/src/un.pl
@@ -47,7 +47,7 @@ use Digest::HMAC_SHA256 qw(hmac_sha256_hex);
 use File::HomeDir;
 use Time::HiRes qw(time sleep);
 
-our $VERSION = "4.2.16";
+our $VERSION = "4.2.17";
 our $API_BASE = 'https://api.unsandbox.com';
 
 # Credential system
diff --git a/clients/python/async/setup.py b/clients/python/async/setup.py
index 68692d2..dac4a0a 100644
--- a/clients/python/async/setup.py
+++ b/clients/python/async/setup.py
@@ -7,7 +7,7 @@ from setuptools import setup, find_packages
 
 setup(
     name="unsandbox-async",
-    version="4.2.16",
+    version="4.2.17",
     description="Asynchronous Python SDK for unsandbox.com code execution",
     long_description=open("README.md").read() if False else "Async Python SDK for unsandbox code execution",
     author="unsandbox.com",
diff --git a/clients/python/sync/setup.py b/clients/python/sync/setup.py
index 7b4a954..31fca4b 100644
--- a/clients/python/sync/setup.py
+++ b/clients/python/sync/setup.py
@@ -7,7 +7,7 @@ with open("README.md", "r", encoding="utf-8") as fh:
 
 setup(
     name="unsandbox",
-    version="4.2.16",
+    version="4.2.17",
     author="Unsandbox",
     description="Synchronous Python SDK for unsandbox.com code execution",
     long_description=long_description,
diff --git a/clients/python/sync/src/__init__.py b/clients/python/sync/src/__init__.py
index 10d9d54..5075053 100644
--- a/clients/python/sync/src/__init__.py
+++ b/clients/python/sync/src/__init__.py
@@ -27,7 +27,7 @@ from .un import (
     CredentialsError,
 )
 
-__version__ = "4.2.16"
+__version__ = "4.2.17"
 __all__ = [
     "execute_code",
     "execute_async",
diff --git a/clients/rust/async/Cargo.toml b/clients/rust/async/Cargo.toml
index d88aec2..4c68eb9 100644
--- a/clients/rust/async/Cargo.toml
+++ b/clients/rust/async/Cargo.toml
@@ -7,7 +7,7 @@
 
 [package]
 name = "un-async"
-version = "4.2.16"
+version = "4.2.17"
 edition = "2021"
 authors = ["unsandbox.com"]
 description = "Asynchronous Rust SDK for unsandbox.com secure code execution API"
diff --git a/clients/rust/sync/Cargo.toml b/clients/rust/sync/Cargo.toml
index a1f87f5..bb73824 100644
--- a/clients/rust/sync/Cargo.toml
+++ b/clients/rust/sync/Cargo.toml
@@ -7,7 +7,7 @@
 
 [package]
 name = "un-sync"
-version = "4.2.16"
+version = "4.2.17"
 edition = "2021"
 authors = ["unsandbox.com"]
 description = "Synchronous Rust SDK for unsandbox.com secure code execution API"
diff --git a/scripts/test-sdk.sh b/scripts/test-sdk.sh
index 8f8d6ae..2838d45 100755
--- a/scripts/test-sdk.sh
+++ b/scripts/test-sdk.sh
@@ -284,10 +284,11 @@ run_test "exec_network" \
     "network-ok"
 
 # Test 1.5: Execute SDK file in sandbox (inception)
-# Note: May fail with syntax errors due to shebangs/imports - that's ok
+# Runs the SDK file inside unsandbox - tests that the interpreter can load/parse the SDK
+# Expected: help/usage output, or interpreter errors (all acceptable)
 run_test "exec_sdk_inception" \
-    "build/un -n semitrusted -e UNSANDBOX_PUBLIC_KEY=\$UNSANDBOX_PUBLIC_KEY -e UNSANDBOX_SECRET_KEY=\$UNSANDBOX_SECRET_KEY -s '$LANG' '$SDK_FILE' 2>&1 || echo 'attempted'" \
-    "usage|help|unsandbox|error|Error|syntax|unexpected|import|require|module|attempted|Illegal|division|Exception|Property|Method|Compilation|expected|package|found"
+    "build/un -n semitrusted -e UNSANDBOX_PUBLIC_KEY=\$UNSANDBOX_PUBLIC_KEY -e UNSANDBOX_SECRET_KEY=\$UNSANDBOX_SECRET_KEY '$SDK_FILE' 2>&1 || echo 'attempted'" \
+    "usage|help|unsandbox|Usage|error|Error|attempted"
 
 echo ""