Com-Addin powerpoint error clarification

I just need some clarification I am building a com-Addin for PowerPoint using VB .Net, i am using Visual studio 2013 updated to the latest version, i do some string manipulation on the slides from Excel and the logic of the code is correct but i keep getting an error in the native code in power point, every time i start debugging i get this error: Debugging Information for '[login to view URL]' cannot be found or does not match. Cannot find or open the PDB file. Do you want to continue debugging? when i press continue it loads some symbols and opens up but when i execute the main procedure i get this error: [login to view URL] not loaded [login to view URL] contains the debug information required to find the source for the module [login to view URL] sometimes when i debug all at once it works but if i debug it step by step i always get the [login to view URL] error and in different parts of the code i tried the isolating technique and i always get that error when an action is done on PowerPoint