Well you have a few " Cannot find or open the PDB file." errors but they shouldn't matter too much as these are files for debugging.
And I cant see any other errors, can you open a command prompt and try pinging twitter's API server?
So if you don't know : Run > Cmd > Enter > ping api.twitter.com > Enter
And tell me whether you get a response back from the server?
If I cannot help you fix this problem, I'm sure Linvi can.
Another thing I just need to double check
The other thing I would check is that your developer account has "Read and Write" permissions, this is also where you can view your API/Access token and API/Access Secret
You can check this at https://apps.twitter.com/ - If you modify any settings it may take a few minutes to update any changes.
And I cant see any other errors, can you open a command prompt and try pinging twitter's API server?
So if you don't know : Run > Cmd > Enter > ping api.twitter.com > Enter
And tell me whether you get a response back from the server?
If I cannot help you fix this problem, I'm sure Linvi can.
Another thing I just need to double check
Header OAuth oauth_consumer_key="xxxxx",oauth_nonce="6496209",oauth_signature_method="HMAC-SHA1",oauth_timestamp="1410968446",oauth_token="xxxxx",oauth_version="1.0",oauth_signature="yG0q3nL3ZzzDIzdhcQf3QunUiSc%3D"
GET : https://api.twitter.com/1.1/search/tweets.json?q=tweetinvi&result_type=Mixed
Header OAuth oauth_consumer_key="xxxxx",oauth_nonce="4364041",oauth_signature_method="HMAC-SHA1",oauth_timestamp="1410968448",oauth_token="xxxxx",oauth_version="1.0",oauth_signature="ULpyAXJd7H6vPsxIYlkx5rOhp70%3D"
Did you 'xxxx' out these variables before posting? I'm guessing you did, which is fine, just checking you're not using "xxxx" as your consumer key :P :).The other thing I would check is that your developer account has "Read and Write" permissions, this is also where you can view your API/Access token and API/Access Secret
You can check this at https://apps.twitter.com/ - If you modify any settings it may take a few minutes to update any changes.