https://devzone.nordicsemi.com/f/nordic-q-a/22529/why-some-examples-in-sdk12-30-does-not-compileHi, I have tested several BLE examples in SDK12.30 and they would not compile, what&#39;s the problem? for example here is the output of ble_app_uart example. *** Using Compiler &#39;V5.06 update 4 (build 422)&#39;, folder: &#39;C:\Keil_v5\ARM\ARMCC\Bin&#39; Builden-USTelligent Community 13Mon, 05 Jun 2017 08:19:58 GMThttps://devzone.nordicsemi.com/thread/88618?ContentTypeID=1Mon, 05 Jun 2017 08:19:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:291027e9-52c9-4a0b-a8f9-3df4b3d718a2myjtag<p>the project path for Keil Ver 5</p> <p>C:\Users\Administrator\Desktop\Nordic\SDK12.30\nRF5_SDK_12.3.0_d7731ad\nRF5_SDK_12.3.0_d7731ad\examples\ble_peripheral\ble_app_uart\pca10028\s130\arm5_no_packs</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/88617?ContentTypeID=1Mon, 05 Jun 2017 08:18:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3c16ea07-0f1b-45c4-8c1a-8b3abfabfdb0myjtag<p>Hi, Thanks for the update, no I did not copy the projects from the SDK Folder, I have just extracted the SDK on my desktop.</p> <p>This is the full SDK and project path</p> <blockquote> <p>C:\Users\Administrator\Desktop\Nordic\SDK 12.30\nRF5_SDK_12.3.0_d7731ad\nRF5_SDK_12.3.0_d7731ad\examples\ble_peripheral\ble_app_uart</p> </blockquote> <p>I have found the solution, it was a space in the project path, after removing the SDK 12.30 space in the path and chaning it to SDK12.30 now it will compile!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/88616?ContentTypeID=1Sun, 04 Jun 2017 12:37:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9bdcb8ae-05ff-41eb-ac92-53936af78240Wojtek<p>I bet you copied them outside of the rest of SDK, didn&#39;t you? What is your SDK location, and the project you are trying to compile location? Or maybe the path is too long.</p><div style="clear:both;"></div>