| 2 | Too any GOSUBs |
| 6 | SUM checksum error |
| 18 | Too many DO statements |
| 29 | Unknown or missing function |
| 30 | Array too large in DIM statement |
| 31 | RETURN without GOSUB |
| 39 | Attempt to use variable in LIST |
| 48 | COM? command error |
| 69 | Illegal FDIM statement |
| 76 | Assembler label error |
| 91 | No hexadecimal number after # |
| 94 | Unknown command; missing statement terminator or END |
| 95 | Floating point item missing or malformed |
| 109 | Number too large |
| 111 | Missing variable in FOR; too many FOR statements |
| 118 | NAME name error |
| 123 | Illegal argument to floating point functions |
| 127 | Line number not found in GOTO or GOSUB |
| 128 | Argument to SIN, COS or TAN too large |
| 129 | Division by zero; protected RAM in graphics mode |
| 134 | Array subscript out of range |
| 135 | SYN? syntax error |
| 149 | Floating-point array subscript out of range |
| 152 | GOSUB without RETURN; FOR without NEXT |
| 156 | Assembler error: illegal type |
| 169 | Floating-point result too large |
| 157 | Label not found |
| 159 | Unmatched quotes in PRINT or INPUT |
| 165 | Loading interrupted |
| 174 | Significant item missing or malformed |
| 191 | LOG or power of zero or negative number |
| 198 | UNTIL with no DO |
| 200 | Unmatched quotes in string |
| 208 | Unrecognised mnemonic in assembler |
| 216 | Illegal DIM statement |
| 230 | NEXT without matching FOR |
| 238 | Argument to EXP too large |
| 248 | Not enough room to insert line |