Content originally posted in LPCWare by lpcxpresso-support on Sat Jun 21 03:02:00 MST 2014
The LPC-Link built into the LPCxpresso1115 board is a different probe technology to the LPC-Link2, and does not use the "redlink" protocol.
The first time you debug a project, the debug probe used is stored, and the next time you debug, the tools will try to debug using the same type of debug connection. In your case, it looks like this is no longer a correct assumption. The dialog you have posted in your screenshot is giving you the option to look for other probes on your system. Use this option!!!!!
I strongly suggest that you take the time to look through the LPCXpresso User Guide supplied within the product - this explains the above in more detail in chapter 4 "Importing and debugging example projects". You can open the user guide in various ways, for example using Help -> LPCXpresso User Guide.
Regards,
LPCXpresso Support