Looking for state machine in verilog

As I said, i'm mor into VHDL than Verilog.

Please use CODE-Tags if you want to write Code in your Post. It makes debugging easier.

What is your Error-Message?

I think you have forgotten to close some of your if statements. This is how I read your code:

localparam State1 = 0;
localparam State2 = 1;
reg  rCntr;
reg  rTmCntr1, rTmCntr2;
reg wPwm, StateSignal, SwitchSignal;
initial begin
rTmCntr1 = 0;
rTmCntr2 = 0;
rCntr = 2000000;
wPwm = 0;
StateSignal = State1;
SwitchSignal = 0;
end
always @(posedge c0) begin
if (SwitchSignal == 1)
	StateSignal = State2;
end
always @(posedge c0) begin
if (StateSignal == State1) begin
	// code for State1
	if (Enable == 1'b1) begin
		rTmCntr1 <= rTmCntr1 + 1'b1;
		if (rTmCntr1 < 2500)
			wPwm <= 1;
		else if (rTmCntr1 > 2500)
			wPwm <= 0;
			if (rTmCntr1 == 5000)
				rTmCntr1 <= 1'b0;
			end
			if (rCntr > 0)
				rCntr <= rCntr - 1'b1;
			else if (rCntr == 10)
				SwitchSignal = 1;
			end
else begin
// code for State2
if (Enable == 1'b1) begin
	rTmCntr2 <= rTmCntr2 + 1'b1;
	if (rTmCntr2 < 1250)
		wPwm <= 1;
	else if (rTmCntr2 > 5000)
		wPwm <= 0;
		if (rTmCntr2 == 5000)
		rTmCntr2 <= 1'b0;
		end
	end
end

And this is how I think it should work (better):

localparam State1 = 0;
localparam State2 = 1;
reg  rCntr;
reg  rTmCntr1, rTmCntr2;
reg wPwm, StateSignal, SwitchSignal;
initial begin
rTmCntr1 = 0;
rTmCntr2 = 0;
rCntr = 2000000;
wPwm = 0;
StateSignal = State1;
SwitchSignal = 0;
end
always @(posedge c0) begin
if (SwitchSignal == 1)
	StateSignal = State2;
end
always @(posedge c0) begin
if (StateSignal == State1) begin
	// code for State1
	if (Enable == 1'b1) begin
		rTmCntr1 <= rTmCntr1 + 1'b1;
		if (rTmCntr1 < 2500)
			wPwm <= 1;
		else if (rTmCntr1 > 2500)
			wPwm <= 0;
			if (rTmCntr1 == 5000)
				rTmCntr1 <= 1'b0;
			end
			if (rCntr > 0)
				rCntr <= rCntr - 1'b1;
			else if (rCntr == 10)
				SwitchSignal = 1;
			end
		end
	end
else begin
// code for State2
if (Enable == 1'b1) begin
	rTmCntr2 <= rTmCntr2 + 1'b1;
	if (rTmCntr2 < 1250)
		wPwm <= 1;
	else if (rTmCntr2 > 5000)
		wPwm <= 0;
		if (rTmCntr2 == 5000)
		rTmCntr2 <= 1'b0;
		end
	end
end