# FATAL ERROR: Build failed. **URL:** \ **Category:** Bug Reports\ **Created:** [March 5, 2016, 3:21pm UTC](https://forums.fusetools.com/t/fatal-error-build-failed/3732 "2016-03-05T15:21:37Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![827433149](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/827433149/32/311_2.png) [@827433149](https://forums.fusetools.com/u/827433149)\ **Post date:** [March 5, 2016, 3:21pm UTC](https://forums.fusetools.com/t/fatal-error-build-failed/3732/1 "2016-03-05T15:21:37Z")
``` E:\fuse\Myfirst>fuse build --target=Android --run Uno 0.20.1-Win32 (build 902) Configuring (1,052.92 ms) Parsing source code (1,721.13 ms) Compiling syntax tree (7,960.24 ms) Generating code and data (9,258.97 ms) Building native target 1/2: libMyfirst.so jni/Source/ActivityAndLifecycle/EntryPoints.cpp:49: error: undefined reference t o 'g::Uno::Exception::Message()' jni/Source/ActivityAndLifecycle/EntryPoints.cpp:63: error: undefined reference t o 'g::Uno::Exception::Message()' jni/Source/ActivityAndLifecycle/EntryPoints.cpp:98: error: undefined reference t o 'g::Uno::Exception::Message()' jni/Source/ActivityAndLifecycle/EntryPoints.cpp:109: error: undefined reference to 'g::Uno::Exception::Message()' collect2.exe: error: ld returned 1 exit status make: * [libs/armeabi-v7a/libMyfirst.so] Error 1 (unknown): E0000: Native build failed (5,793.90 ms) Build completed in 25.79 seconds. 0 Warning(s) 1 Error(s) Error Summary (unknown): E0000: Native build failed FATAL ERROR: Build failed. fuse: Errors were encountered while building the project ``` ---
**Author:** ![kusma](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/kusma/32/595_2.png) [@kusma](https://forums.fusetools.com/u/kusma)\ **Post date:** [March 7, 2016, 4:09pm UTC](https://forums.fusetools.com/t/fatal-error-build-failed/3732/2 "2016-03-07T16:09:28Z")
`Uno 0.20.1` indicates that you’re running with an out-of-date version of Fuse. Can you try updating?