OpenCL directories declared invalid after using them once - c++

Question

I have a strange problem with my OpenCL project. When I add the directories to the compiler(compiler is Dev-C++) it works at first. Problem is if I close Dev-C++ and open it up again all the directories are declared invalid. If I delete them and add them again they seem to work. Why is this happening. Here is my code if it helps:
// Copyright (c) 2010 Advanced Micro Devices, Inc. All rights reserved.
//
// A minimalist OpenCL program.
#include <CL/cl.h>
#include <CL/cl.hpp>
#include <stdio.h>
#include <CL/cl_ext.h>
#define NWITEMS 512
// A simple memset kernel
const char *source =
"__kernel void memset( __global uint *dst ) \n"
"{ \n"
" dst[get_global_id(0)] = get_global_id(0); \n"
"} \n";
int main(int argc, char ** argv, global_work_size)
{
// 1. Get a platform.
cl_platform_id platform;
clGetPlatformIDs( 1, &platform, NULL );
// 2. Find a gpu device.
cl_device_id device;
clGetDeviceIDs( platform, CL_DEVICE_TYPE_GPU,
1,
&device,
NULL);
// 3. Create a context and command queue on that device.
cl_context context = clCreateContext( NULL,
1,
&device,
NULL, NULL, NULL);
cl_command_queue queue = clCreateCommandQueue( context,
device,
0, NULL );
// 4. Perform runtime source compilation, and obtain kernel entry point.
cl_program program = clCreateProgramWithSource( context,
1,
&source,
NULL, NULL );
clBuildProgram( program, 1, &device, NULL, NULL, NULL );
cl_kernel kernel = clCreateKernel( program, "memset", NULL );
// 5. Create a data buffer.
cl_mem buffer = clCreateBuffer( context,
CL_MEM_WRITE_ONLY, ...);
// 6. Launch the kernel. Let OpenCL pick the local work size.
size_t KERNEL_WORK_GROUP_SIZE = NWITEMS;
clSetKernelArg(kernel, 0, sizeof(buffer), (void*) &buffer);
clEnqueueNDRangeKernel( queue,
kernel,
1,
NULL,
&global_work_size,
NULL, 0, NULL, NULL);
clFinish( queue );
// 7. Look at the results via synchronous buffer map.
cl_uint *ptr;
ptr = (cl_uint *) clEnqueueMapBuffer( queue,
buffer,
CL_TRUE,
CL_MAP_READ,
0,
NWITEMS * sizeof(cl_uint),
0, NULL, NULL, NULL );
int i;
for(i=0; i < NWITEMS; i++)
printf("%d %d\n", i, ptr[i]);
return(0);
}