Connection Failed

Yesterday I tried connecting to this server ftp address to upload some files: -

I got this error:
[12:36:53] SmartFTP v3.0.1019.8

[12:37:12] Connect failed. Waiting to retry (30s)...

[12:37:20] Connection attempt 2...

[12:37:20] Connect failed. Waiting to retry (30s)...

I also tried connecting to another server today: - WhoCares357

I get the same error. I have no idea what i could be. I was uploading just fine a week ago and nothing (that I know of at least) has changed on my computer. I'm using ESET Smart Security 3.0.669.0 as my Anti-Virus/Firewall. I tried disabling and got the same error. I also tried forwarding the port range (I found the range in tools) but, alas, to no avail.

Does anyone have any idea why this is happening? Thanks to all who reply.

Was the client updated in the past week?

Edit: The solution worked. Thank you very much.