I have a couple of nearly identical Apex classes that I am trying to get test classes done for. Each uses a different object.  I was able to the the one that calls on the Account to work perfectly.  Now I am just trying to tweak it to get the other one that calls on a custom object to work equally perfect.  I keep getting an "invalid type" error.  Okay so here is the class I am trying to write the test class for:
 

public class CauseLossControllerEXT {
public blob picture { get; set; }
    public String errorMessage { get; set; }
    public Attachment	newAttach {get; set;}
    private final Claims__c claim;
    private final String  ERROR_IMG_TYPE    = 'The image must be in .jpg, .gif or .png format';   
    private Set<String> imagesTypes         = new Set<String> {'image/jpeg', 'image/pjpeg', 'image/png', 'image/x-png', 'image/gif'};
    private Set<String> notAllowedTypes     = new Set<String> {'application/octet-stream'};
    private ApexPages.StandardController stdController;

    public CauseLossControllerEXT(ApexPages.StandardController stdController) {
        this.claim = (Claims__c)stdController.getRecord();
        this.stdController = stdController;
    }

    public PageReference save() {
        errorMessage = '';
        try {
            upsert claim;
            if (picture != null) {
                Attachment attachment = new Attachment();
                attachment.body = picture;
                attachment.name = 'causeofloss_' + claim.id;
                attachment.Description = 'Cause of Loss Photo';
                attachment.parentid = claim.id;
                insert attachment;
                claim.CauseofLossURL__c = '/servlet/servlet.FileDownload?file='
                                          + attachment.id;
                update claim;
            }
            return new ApexPages.StandardController(claim).view();
        } catch(System.Exception ex) {
            errorMessage = ex.getMessage();
            return null;
        }
    }
}

Here is the class I successfully wrote the test class for:
 

public class CompanyLogoControllerEXT {
public blob picture { get; set; }
    public String errorMessage { get; set; }
    public Attachment	newAttach {get; set;}
    private final Account account;
    private final String  ERROR_IMG_TYPE    = 'The image must be in .jpg, .gif or .png format';   
    private Set<String> imagesTypes         = new Set<String> {'image/jpeg', 'image/pjpeg', 'image/png', 'image/x-png', 'image/gif'};
    private Set<String> notAllowedTypes     = new Set<String> {'application/octet-stream'};
    private ApexPages.StandardController stdController;

    public CompanyLogoControllerEXT(ApexPages.StandardController stdController) {
        this.account = (Account)stdController.getRecord();
        this.stdController = stdController;
    }

    public PageReference save() {
        errorMessage = '';
        try {
            upsert account;
            if (picture != null) {
                Attachment newAttach = new Attachment();
                newAttach.body = picture;
                newAttach.name = 'companylogo_' + account.id;
                newAttach.Description = 'Company Logo';
                newAttach.parentid = account.id;
                insert newAttach;
                account.CompLogoURL__c = '/servlet/servlet.FileDownload?file='
                                          + newAttach.id;
                update account;
            }
            return new ApexPages.StandardController(account).view();
        } catch(System.Exception ex) {
            errorMessage = ex.getMessage();
            return null;
        }
    }
}

Here is the SUCCESSFUL test class (100% coverage)
 

@isTest
public class CompanyLogoControllerEXTTest {
	@isTest
    static void testCompanyLogo() {
        Account acc=new Account();
        acc.Name='testAcc';
        ApexPages.StandardController sc = new ApexPages.StandardController( acc );
    	CompanyLogoControllerEXT comp=new CompanyLogoControllerEXT(sc);       
        String str='testblob';
        comp.picture=Blob.valueof(str);
        comp.save();
        delete acc;
        comp.save();
    }
}

I am trying to tweak that successful test class for the first class above (the CauseLossControllerEXT)

I got this far, below, but I know I have something wrong with the tweak.  Getting "invalid type" error on line 5
 

@isTest
public class CauseLossControllerEXTtest {
	@isTest
    static void testCauseLoss() {
        Claims__C acc=new claim();
        acc.Name='testAcc';
        ApexPages.StandardController sc = new ApexPages.StandardController( acc );
    	CauseLossControllerEXT comp=new CauseLossControllerEXT(sc);       
        String str='testblob';
        comp.picture=Blob.valueof(str);
        comp.save();
        delete acc;
        comp.save();
    }
}

Any help is greatly appreciated.